Privacy Policy

Amooz App Studio

Effective Date: April 24, 2026  |  Last Updated: April 29, 2026

1. Introduction

Welcome to Amooz App Studio. This Privacy Policy explains how we collect, use, share, and protect your personal information when you:

  • Visit our website at amoozstudio.app (the “Website”);
  • Use MathStudy, our Android mobile application (the “App”); or
  • Contact us through any of the channels described below.

We refer to the Website, the App, and any other products or services we may offer collectively as the “Services.”

In this Privacy Policy, the terms “we,” “us,” “our,” and “Amooz App Studio” refer to Mahamud Hussain, an individual developer trading as Amooz App Studio, based in Dhaka, Bangladesh. The terms “you” and “your” refer to the individual using our Services.

Amooz App Studio is currently operated as a personal project by an individual developer. We are the “data controller” responsible for your personal information under applicable data protection laws, including the European Union General Data Protection Regulation (GDPR), the UK GDPR, the California Consumer Privacy Act as amended by the California Privacy Rights Act (CCPA/CPRA), and applicable data protection laws of Bangladesh.

We take your privacy seriously. We have written this Privacy Policy in plain, straightforward language so you can understand our practices. If anything is unclear, please contact us using the information in the “Contact Us” section at the end of this document.

2. Scope of This Privacy Policy

This Privacy Policy applies to all individuals who interact with our Services, including:

  • Visitors to amoozstudio.app;
  • Users of the MathStudy Android application;
  • Individuals who contact us through our contact form, support email, or other communication channels;
  • Readers of our blog (when this feature becomes available).

This Privacy Policy is structured as follows:

  • General sections (Sections 1 through 11, and Sections 17 through 24) apply to all of our Services.
  • Website-specific section (Section 12) applies only to amoozstudio.app.
  • App-specific sections begin at Section 13. Currently we operate one app, MathStudy (Section 13). If we release additional apps in the future, we will add new app-specific sections to this Privacy Policy.

This Privacy Policy does NOT apply to:

  • Third-party websites, services, or applications that may be linked from our Services. Those third parties have their own privacy policies, which we encourage you to review.
  • Services operated by other developers that may have similar names but are not operated by Amooz App Studio.

3. Key Terms

For clarity, the following terms used throughout this Privacy Policy are defined here:

  • “AI Provider” means the third-party artificial intelligence service we use to process math problems submitted through the App. As of the effective date of this Policy, our AI Provider is Anthropic PBC (operator of the Claude AI models).
  • “Personal Information” or “Personal Data” means any information that relates to an identified or identifiable individual. This can include things like your name, email address, IP address, device identifiers, or usage history tied to a device.
  • “Processing” means any operation performed on personal information, such as collection, storage, use, disclosure, or deletion.
  • “Services” means our Website, the MathStudy App, and any other products or services we provide.
  • “Third Party” means any person or organization other than Amooz App Studio and you.
  • “Anonymous Identifier” means a randomly generated identifier (for example, a Firebase Installation ID) that is assigned to an installation of our App and that does not, on its own, identify you personally.

4. Information We Collect (Overview)

We collect information in three main ways:

  • Information you provide directly to us — for example, when you email us or fill out the contact form on the Website.
  • Information we collect automatically — for example, device information, usage information, and analytics data collected while you use our Services.
  • Information generated by your use of our AI features — for example, photos of math problems you scan or upload, and the text of math questions you enter.

The specific types of information collected depend on which Service you are using. The Website-specific section (Section 12) and App-specific sections (starting at Section 13) give the full detail. The rest of Section 4 describes categories of information that may be collected across multiple Services.

4.1 Information You Provide Directly

  • Contact information: If you email us at support@amoozstudio.app or contact@amoozstudio.app, or fill out our Website contact form, we receive your name, email address, and any content you include in your message.
  • Blog comments (if and when the blog feature becomes available): If you leave a comment on a blog post, we receive your name, email address, and the content of your comment. Your name and the comment may be displayed publicly if enabled.
  • Data access or deletion requests: If you exercise your data rights (described in Section 15), we will collect information needed to verify your identity and fulfill your request, such as your device identifier or email address.

4.2 Information Collected Automatically

  • Device information: Device type, operating system version, screen size, device language, country setting, and manufacturer.
  • Usage information: Which features you use, how often you use them, how long you stay on a screen, and similar patterns.
  • Diagnostic information: Crash reports, error logs, and performance metrics to help us identify and fix bugs.
  • Network information: IP address, approximate location based on IP address (country or region level only; we do NOT collect precise GPS location), and timestamps.

4.3 Information Generated by AI Features (MathStudy Only)

When you use the AI Tutor feature in MathStudy, we process:

  • Images of math problems that you scan with your camera or upload from your device.
  • Text questions you may type or generate through the AI Tutor interface.
  • AI responses generated by our AI Provider, including step-by-step solutions, problem classifications, and difficulty tags.

Full details on AI processing appear in Section 13.

4.4 Information We Do NOT Collect

We want to be clear about the information we do not collect:

  • We do NOT sell your personal information to anyone, ever.
  • We do NOT collect your precise GPS location.
  • We do NOT access your contacts, SMS messages, or call history.
  • We do NOT access your photos or files beyond what you specifically select to upload.
  • We do NOT collect biometric data.
  • We do NOT collect health information.
  • We do NOT receive or store your payment card details; subscription payments are handled directly by Google Play Billing.

5. How We Use Your Information

We use the information we collect for the following purposes:

5.1 To Provide and Operate Our Services

  • Process your math problems through our AI Tutor feature and return solutions to you.
  • Maintain your scan history and session data within the App.
  • Enforce free-tier limits (for example, daily and monthly scan quotas).
  • Enable premium features for users with an active subscription.
  • Display graphs, geometry figures, formulas, and learning content that you request.
  • Allow you to download or share your session history.

5.2 To Maintain, Improve, and Secure Our Services

  • Identify and fix bugs, crashes, and performance issues.
  • Measure which features are used most and how users navigate the App so we can improve the experience.
  • Detect and prevent fraud, abuse, and unauthorized use of our Services.
  • Ensure our Services are running reliably across different devices and Android versions.

5.3 To Communicate With You

  • Respond to emails and messages you send us.
  • Send important notices about the Services, such as changes to this Privacy Policy or Terms of Service.
  • Answer support questions.

We do NOT send marketing emails as of the effective date of this Policy. If that changes in the future, we will update this Privacy Policy and obtain your consent where required by law.

5.4 To Comply With Legal Obligations

  • Comply with applicable laws, regulations, court orders, and lawful government requests.
  • Enforce our Terms of Service.
  • Protect the rights, property, and safety of Amooz App Studio, our users, and the public.

5.5 For Advertising

To display non-personalized advertisements in the free tier of the MathStudy App through Google AdMob. See Section 16 for complete details.

6. Legal Basis for Processing (EU/UK Users)

If you are located in the European Economic Area (EEA), the United Kingdom, or another jurisdiction that requires a legal basis for processing personal data, we rely on the following legal bases under the GDPR and UK GDPR:

  • Performance of a contract (Article 6(1)(b) GDPR): To provide the Services you have requested — for example, processing a scanned math problem when you use the AI Tutor.
  • Legitimate interests (Article 6(1)(f) GDPR): To operate, secure, and improve our Services; to analyze usage; and to prevent fraud and abuse. Our legitimate interest is to run a sustainable math education service. We balance this interest against your privacy rights.
  • Consent (Article 6(1)(a) GDPR): For non-essential cookies on the Website (see Section 12) and any future processing that requires consent.
  • Compliance with legal obligations (Article 6(1)(c) GDPR): When the law requires us to keep certain records or respond to legal requests.

You have the right to object to processing based on legitimate interests, and you have the right to withdraw consent at any time for processing based on consent. See Section 15 for details on your rights.

7. How We Share Your Information

We share your information only in the limited circumstances described below. We do not sell your personal information to anyone.

7.1 With Service Providers

We share information with the following categories of third-party service providers who help us operate our Services:

  • Cloud hosting and infrastructure providers (Google Firebase, including Firestore, Cloud Functions, Crashlytics, and Analytics);
  • AI processing provider (Anthropic PBC, operator of Claude AI);
  • Payment processing (Google Play Billing — we do not store or receive your payment card details; Google handles the transaction directly);
  • Advertising provider (Google AdMob — for non-personalized advertising in the free tier);
  • Website hosting (Hostinger, which hosts amoozstudio.app);
  • Content management (WordPress / Automattic, which powers amoozstudio.app);
  • Website analytics (Google Analytics);
  • Email infrastructure (the provider behind support@amoozstudio.app and contact@amoozstudio.app).

Each of these service providers is bound by its own privacy policy and data processing agreement. We have chosen providers with strong privacy commitments, but we cannot control their policies or practices directly. Section 8 provides links to each provider’s privacy policy.

7.2 For Legal Reasons

We may disclose your information if we believe in good faith that disclosure is necessary to:

  • Comply with applicable laws, court orders, subpoenas, or lawful government requests;
  • Protect the safety, rights, property, or security of Amooz App Studio, our users, or the public;
  • Investigate, prevent, or address suspected fraud, unauthorized use, or other illegal activity;
  • Enforce our Terms of Service.

7.3 In a Business Transfer

As noted in Section 1, Amooz App Studio is currently operated as a personal project. We plan to transfer ownership of MathStudy from our personal developer account to an Amooz App Studio business entity in the future, once business registration is complete. We may also transfer ownership of our Services in connection with a merger, acquisition, asset sale, or similar transaction. In any such case, we will ensure that the recipient is bound to handle your information in a manner consistent with this Privacy Policy, or that you are notified and given an opportunity to delete your information before the transfer.

7.4 With Your Consent

We may share your information in other ways with your explicit consent.

7.5 We Do Not Sell Your Personal Information

We do not and have never sold your personal information for monetary value. We do not share your personal information with third parties for their own advertising or marketing purposes. See Section 15.3 for information about the California “Do Not Sell or Share” right.

8. Third-Party Services We Use

The table below lists the specific third-party services that may process your personal information. Each link leads to that service’s own privacy policy. We encourage you to review them.

ServicePurposePrivacy Policy Link
Google Firebase (Firestore, Cloud Functions, Analytics, Crashlytics)Backend infrastructure, database, analytics, and crash reporting for MathStudyhttps://firebase.google.com/support/privacy
Google Play Services & Google Play BillingCore Android services and subscription payment processinghttps://policies.google.com/privacy
Google AdMobNon-personalized advertising in the free tierhttps://policies.google.com/technologies/ads
Google AnalyticsWebsite usage analytics for amoozstudio.apphttps://policies.google.com/privacy
Anthropic PBC (Claude AI)AI processing of math problems submitted via the Apphttps://www.anthropic.com/legal/privacy
HostingerWeb hosting for amoozstudio.apphttps://www.hostinger.com/privacy-policy
WordPress / AutomatticContent management platform for amoozstudio.apphttps://automattic.com/privacy/

9. Data Retention

We keep your personal information only as long as needed for the purposes described in this Privacy Policy, unless a longer retention period is required or permitted by law.

Specific retention periods include:

  • MathStudy session history (free tier): Retained for 7 days after creation, then automatically deleted.
  • MathStudy session history (premium tier): Retained for as long as your premium subscription is active. After cancellation or downgrade to the free tier, retention reverts to the free-tier policy: entries older than 7 days are automatically deleted, and only the most recent 7 days of history will be available going forward.
  • Scan counters and usage statistics: Retained for the duration of the billing period (monthly), then reset.
  • Subscription tier status: Retained while your subscription is active, plus a reasonable period afterward to handle refunds, disputes, and legal requirements.
  • Crash reports and analytics data: Retained for up to 14 months (Firebase Analytics default) or as configured by us.
  • Contact form and support email records: Retained for up to 24 months after your last interaction, unless you request earlier deletion.
  • Blog comments (if enabled): Retained as long as the comment is published. You may request deletion at any time.
  • Legal and compliance records: Retained as long as required by applicable law (for example, tax records, fraud-prevention records).

When information is no longer needed, we delete it or anonymize it so it can no longer be associated with you.

10. Data Security

We implement reasonable and appropriate technical and organizational measures to protect your personal information against unauthorized access, disclosure, alteration, or destruction. These measures include:

  • Encryption in transit: All communication between the App, our backend (Firebase), and our AI Provider is encrypted using industry-standard TLS.
  • Encryption at rest: Data stored in Firebase is encrypted at rest by Google Cloud.
  • Access controls: Only authorized personnel (currently, only the developer) have access to backend data, protected by strong passwords and two-factor authentication.
  • Secure keystore management: App signing keys and secrets are stored securely and are not embedded in source code.
  • Minimum data collection: We only collect data that is necessary to operate the Services.
  • Regular security updates: We apply security patches to dependencies and libraries used in our Services.

Despite our best efforts, no security measure is perfect, and we cannot guarantee absolute security. If we become aware of a data breach affecting your personal information, we will notify you as required by applicable law.

11. Children’s Privacy

Our Services are intended for users aged 13 and older. We do not knowingly collect personal information from children under 13.

11.1 United States (COPPA)

MathStudy is not directed to children under 13. We do not knowingly collect, use, or disclose personal information from children under 13 in violation of the US Children’s Online Privacy Protection Act (COPPA). If we learn that we have collected personal information from a child under 13, we will delete that information promptly. If you believe a child under 13 has provided us with personal information, please contact us at support@amoozstudio.app and we will take steps to remove it.

11.2 European Union and United Kingdom (GDPR-K)

In some European Union member states, in the United Kingdom, and in other parts of the EEA, the age of digital consent is higher than 13 (up to 16 in some countries). If you are located in the EU, UK, or EEA and are under 16 years of age, please obtain your parent’s or legal guardian’s permission before using our Services. We rely on parental consent being obtained offline by the user. If you are a parent or guardian and believe your child has used our Services without your consent, please contact us and we will delete the relevant data.

11.3 Bangladesh

Consistent with local norms and emerging data protection standards in Bangladesh, we encourage parental supervision for users under 18. Parents or guardians who have concerns about a minor’s use of our Services may contact us to request deletion.

11.4 Design Choices for a 13+ Audience

To reflect our 13+ audience, we:

  • Serve only non-personalized advertisements (we do not build advertising profiles of users);
  • Do not require account creation, which reduces the amount of personal information collected;
  • Do not sell any user information;
  • Limit data retention in line with Section 9.

12. Amooz App Studio Website (amoozstudio.app)

This section describes how we handle information collected through our Website at amoozstudio.app.

12.1 Website Hosting

The Website is built on the WordPress content management system and is hosted by Hostinger. When you visit the Website, Hostinger’s servers automatically receive information about your visit, including your IP address, browser type, device type, referring URL, and timestamps. This information is used by Hostinger to operate the hosting service and by us to understand how the Website is used.

12.2 Contact Form

The Website includes a contact form. When you submit the contact form, we collect:

  • Your name;
  • Your email address;
  • The content of your message;
  • The date and time of submission.

We use this information only to respond to your inquiry. Contact form submissions are sent to our support email address (support@amoozstudio.app or contact@amoozstudio.app) and may be retained as described in Section 9.

12.3 Blog

The Website has a blog feature that is currently disabled. When the blog becomes available, readers may be able to leave comments on blog posts. If you leave a comment:

  • Your name, email address, and comment content will be collected;
  • Your name and comment may be displayed publicly. Your email address will not be displayed publicly but will be retained for moderation purposes;
  • Your comment, along with associated metadata (such as IP address and approximate timestamp), may be processed to prevent spam;
  • You may request deletion of your comments at any time.

12.4 Cookies and Similar Technologies

The Website uses cookies and similar technologies to operate properly and to help us understand how visitors use the Website. Cookies are small text files that are stored on your device by your browser.

Categories of cookies we use:

  • Strictly necessary cookies: Required for the Website to function. These cannot be disabled. Examples: session cookies, cookies used by WordPress to remember if a logged-in administrator is on the site, and cookies that remember whether you have accepted the cookie banner.
  • Analytics cookies: Used by Google Analytics to understand how visitors use the Website. These cookies track information like which pages you visit, how long you stay on each page, and how you arrived at the Website. Analytics cookies are set only after you consent (where consent is required, such as for visitors from the EU and UK).
  • Functional cookies: Remember your preferences, such as language or whether you have accepted the cookie notice.

You can control cookies through your browser settings. Most browsers allow you to block all cookies, block third-party cookies only, or delete cookies that have already been set. Blocking cookies may affect the functionality of the Website. You can also opt out of Google Analytics tracking by installing the Google Analytics Opt-Out Browser Add-on: https://tools.google.com/dlpage/gaoptout.

12.5 Google Analytics

We use Google Analytics on the Website to measure traffic and understand usage patterns. Google Analytics collects information such as:

  • IP address (anonymized where available);
  • Pages viewed and time spent on each page;
  • Referring URL;
  • Browser and device information;
  • General geographic location (country or city level).

Google Analytics data is processed by Google in accordance with its privacy policy. We have configured Google Analytics to anonymize IP addresses where possible. More information about how Google uses this data is available at https://policies.google.com/privacy.

12.6 Embedded Content From Other Websites

Blog articles and Website pages may include embedded content from other websites (for example, YouTube videos or social media embeds). Embedded content behaves as if you had visited the other website directly. These other websites may collect data about you, use cookies, and monitor your interaction with the embedded content. We do not control this collection.

12.7 Links to External Websites

The Website may link to external sites that we do not operate. This Privacy Policy does not apply to those sites. We are not responsible for the privacy practices of external sites, and we encourage you to read their privacy policies.

13. MathStudy Android App

This section describes how we handle information collected through the MathStudy Android app specifically.

13.1 No Account Required

MathStudy does not require you to create an account, sign in, or provide any personal identifiers such as your name or email address to use the App. Instead, the App assigns your installation an anonymous Firebase Installation ID so we can save your history and usage data under your device.

13.2 What MathStudy Collects

When you use MathStudy, the following information may be collected:

13.2.1 Images and AI Content

  • Photos of math problems that you take with your camera or upload from your device gallery. Only images you specifically select are uploaded; the App does not scan your gallery.
  • AI-generated responses, including step-by-step solutions, problem classifications, and difficulty labels.
  • Text you generate through the AI Tutor interface (for example, when the AI asks for clarification or when you interact with the chat).

These images and content are sent to our backend (Firebase Cloud Functions) and, from there, to our AI Provider (Anthropic) for processing. The AI Provider returns a solution, which is shown to you in the App. See Section 13.3 for the full AI processing flow.

13.2.2 Usage Data

  • Feature usage events (for example: app_opened, scan_used, practice_started, history_downloaded, dark_mode_toggled, calculator_evaluated).
  • Scan counters (how many scans you have used today and this month, to enforce free-tier limits of 3 per day and 10 per month).
  • Which AI model was used for a given session (Claude Sonnet for hard or image-based problems; Claude Haiku for easier problems).
  • Method selections (which solving method you chose when multiple methods are offered).
  • Practice session results (how many questions answered, which topic, whether you used Show Steps).

13.2.3 Device and Diagnostic Data

  • Device model, manufacturer, Android version, locale, and screen size.
  • Crash reports (collected by Firebase Crashlytics), including stack traces, App state at the time of the crash, and non-identifying device information.
  • Application version number and build information.
  • Non-precise location data (country or region only, derived from IP address).

13.2.4 Subscription and Billing Data

  • Your current subscription tier (Free or Premium) and expiration date.
  • Subscription product purchased (monthly or yearly).
  • Purchase tokens from Google Play (used to verify subscriptions).

We do NOT receive your payment card details. All payment processing is handled by Google Play Billing; we only receive confirmation that a purchase was successful.

13.2.5 Advertising Data (Free Tier Only)

  • Android Advertising ID (AAID), used in a limited, non-personalized manner. See Section 16.
  • Ad interaction data (impressions, clicks), reported to Google AdMob.

13.3 How Images and Math Problems Are Processed by AI

When you submit a math problem using the scan or upload feature, the following happens:

  1. The image you selected is resized (to a maximum of 1024 pixels on the longer side) and compressed (JPEG, approximately 85% quality) on your device to reduce upload size.
  2. The resized image is sent over an encrypted (TLS) connection to our Firebase Cloud Function.
  3. Our Firebase Cloud Function forwards the image to our AI Provider (Anthropic) via Anthropic’s API, over an encrypted connection.
  4. The AI Provider processes the image and returns a text-based solution.
  5. The solution is streamed back to the App and shown to you.
  6. A record of the session is stored in Firebase Firestore and linked to your anonymous Firebase Installation ID.

Our AI Provider (Anthropic) is independent of Amooz App Studio. Anthropic may process the content of your scans to generate responses and, in limited circumstances, to detect abuse or comply with legal obligations. According to Anthropic’s commercial terms, inputs submitted via the API are not used to train Anthropic’s models by default. For more information, see Anthropic’s privacy policy at https://www.anthropic.com/legal/privacy.

What to avoid uploading: Please do not scan or upload images that contain personal information unrelated to the math problem (for example, identification documents, personal photos, medical records, or sensitive information about other people). We recommend cropping your images to include only the math content before submitting.

13.4 Cloud Function Caching

To improve performance and reduce costs, our Firebase Cloud Function may cache anonymized responses to commonly submitted math problems. Caches are keyed by a hash of the problem content and do not contain identifying information. Cache entries expire automatically after a limited period.

13.5 Permissions Requested by MathStudy

MathStudy requests the following Android permissions:

  • Camera (android.permission.CAMERA): Required to scan math problems using the in-app scanner. Only used when you tap the scan button. We do not record video or access your camera in the background.
  • Internet (android.permission.INTERNET): Required to communicate with our backend and AI Provider.
  • Network state (android.permission.ACCESS_NETWORK_STATE): Required to detect whether your device is online so we can show appropriate error messages.
  • Billing (com.android.vending.BILLING): Required to process subscription purchases through Google Play Billing.

We do NOT request permissions for location, contacts, SMS, phone calls, microphone, calendar, or files outside of images you explicitly select.

13.6 Data Stored on Your Device

In addition to data sent to our backend, MathStudy stores some data locally on your device:

  • Preferences (for example, dark mode setting);
  • A cached copy of your recent history for offline viewing;
  • KaTeX rendering assets (for the Calculator feature).

You can clear local data by clearing the App’s storage in your Android settings or by uninstalling the App.

13.7 Data Stored in Our Backend (Firebase)

The following data is stored in Firebase Firestore, linked to your anonymous Firebase Installation ID:

  • Your scan history (problem image reference, AI response, timestamp, tier at the time of the scan);
  • Your scan counters (daily and monthly usage);
  • Your subscription tier and purchase tokens;
  • Basic analytics events (for aggregate analysis; not used to identify individuals).

This data is retained according to the schedule in Section 9.

14. International Data Transfers

Amooz App Studio is based in Bangladesh. Our service providers are located in various countries, including the United States (Google Firebase, Google Analytics, Anthropic, Google AdMob, Hostinger, Automattic and WordPress) and potentially other regions where Google operates data centers.

When you use our Services from outside these countries, your personal information will be transferred to and processed in countries that may have different data protection laws than your country of residence.

14.1 Safeguards for International Transfers

For transfers of personal data from the European Economic Area, United Kingdom, or Switzerland to countries that are not subject to an adequacy decision, we rely on appropriate safeguards, which may include:

  • Standard Contractual Clauses approved by the European Commission;
  • Data Processing Agreements with our service providers that include transfer safeguards;
  • Service providers that are certified under recognized data protection frameworks.

If you have questions about specific safeguards, please contact us.

15. Your Rights

Depending on where you live, you have various rights regarding your personal information. This section describes those rights and how to exercise them.

15.1 Rights Available to All Users

Regardless of where you live, you have the right to:

  • Contact us with questions about this Privacy Policy;
  • Request information about what personal data we hold about you;
  • Request deletion of your data, subject to exceptions required by law;
  • Ask us to correct inaccurate information;
  • Opt out of non-essential analytics, to the extent possible, by clearing app data or uninstalling the App.

To exercise any of these rights, email support@amoozstudio.app. We will respond within 30 days.

15.2 European Economic Area (EEA), United Kingdom, and Switzerland — GDPR Rights

If you are in the EEA, UK, or Switzerland, you have the following rights under the GDPR and UK GDPR:

  • Right of access: Request a copy of the personal data we hold about you.
  • Right to rectification: Ask us to correct inaccurate or incomplete personal data.
  • Right to erasure (right to be forgotten): Ask us to delete your personal data, subject to certain exceptions.
  • Right to restriction of processing: Ask us to stop or limit processing in certain circumstances.
  • Right to data portability: Receive your personal data in a structured, commonly used, machine-readable format, and transmit it to another controller.
  • Right to object: Object to processing based on legitimate interests, direct marketing, or automated decision-making.
  • Right not to be subject to automated decision-making: We do not make decisions based solely on automated processing that produce legal or similarly significant effects on you.
  • Right to withdraw consent: If we rely on your consent, you may withdraw it at any time.
  • Right to lodge a complaint: You may file a complaint with your local data protection authority. A list of authorities is available at https://edpb.europa.eu/about-edpb/about-edpb/members_en.

To exercise any of these rights, email support@amoozstudio.app with a clear description of your request. We may need to verify your identity before processing the request.

15.3 California Residents — CCPA/CPRA Rights

If you are a California resident, you have the following rights under the California Consumer Privacy Act as amended by the California Privacy Rights Act:

  • Right to know: Request disclosure of the categories and specific pieces of personal information we have collected about you, the sources from which we collected it, our purposes for collecting it, and the categories of third parties with whom we share it.
  • Right to delete: Request deletion of your personal information, subject to certain exceptions.
  • Right to correct: Request correction of inaccurate personal information.
  • Right to opt out of sale or sharing: Opt out of the sale or sharing of your personal information. As stated in this Policy, we do not sell or share your personal information, so there is no sale or share to opt out of. If this ever changes, we will update this Policy and provide an opt-out mechanism.
  • Right to limit use of sensitive personal information: Limit how we use “sensitive personal information” as defined by the CPRA. We do not use sensitive personal information for purposes that would trigger this right.
  • Right to non-discrimination: You will not receive discriminatory treatment for exercising any of these rights.

To exercise these rights, email support@amoozstudio.app. We will verify your identity using reasonable methods (for example, confirming your email address or Firebase Installation ID).

Authorized agents: You may designate an authorized agent to make requests on your behalf. The agent must provide proof of authorization, and we may still need to verify your identity.

Do Not Sell or Share: We do not sell or share personal information as those terms are defined under the CPRA.

Minors 13–15: If you are between 13 and 15 years of age and a California resident, we do not sell or share your personal information.

15.4 Bangladesh

If you are a resident of Bangladesh, you have rights under applicable Bangladeshi data protection laws and regulations. These include the ability to request access, correction, or deletion of your personal information. To exercise these rights, email support@amoozstudio.app. You may also contact the appropriate authorities in Bangladesh if you have unresolved complaints.

15.5 Other Jurisdictions

If you reside in another jurisdiction that provides specific data protection rights (for example, Brazil’s LGPD, Canada’s PIPEDA, South Africa’s POPIA, or India’s DPDP Act), we will honor those rights to the extent they apply to our processing of your personal information. Please contact us to exercise your rights.

15.6 How to Submit a Request

To submit a privacy request:

  • Email support@amoozstudio.app with the subject line “Privacy Request.”
  • Clearly describe the right you are exercising (access, deletion, correction, etc.).
  • Include enough information for us to verify your identity (for example, the email you use to contact us, approximate dates of use, or your Firebase Installation ID if you can find it).
  • We will respond within 30 days. If we need more time, we will let you know.

There is no charge for submitting a privacy request. We may refuse unfounded or excessive requests, as permitted by law.

16. Advertising (MathStudy Free Tier)

16.1 Google AdMob

MathStudy’s free tier includes advertisements delivered by Google AdMob. We plan to integrate AdMob from the initial release, although ads may be initially disabled, limited, or progressively enabled as the user base grows.

When ads are active:

  • We serve non-personalized ads only. Non-personalized ads are selected based on the context of the App and general location (country), not on your individual interests or profile.
  • Google AdMob may collect the Android Advertising ID (AAID) and limited technical information to serve ads and prevent fraud.
  • No sensitive categories (such as health, finance, or religion) are used for ad targeting.

16.2 Why Non-Personalized Ads

Because MathStudy has a 13+ target audience and is available to minors under 16 in some jurisdictions, we have chosen to serve non-personalized ads by default. This is a privacy-protective choice that limits how much information is used for advertising purposes.

16.3 Reset or Limit Your Advertising ID

Android allows you to reset or limit the use of your Advertising ID:

  1. Open your device’s Settings.
  2. Go to Google → Ads.
  3. Tap “Delete advertising ID” or “Opt out of Ads Personalization.”

Details may vary by Android version and device manufacturer.

16.4 AdMob Privacy Practices

Google AdMob is operated by Google LLC. For more information about how Google handles advertising data, see:

17. Data Deletion and Account Closure

Because MathStudy does not require an account, “account deletion” effectively means deletion of the data stored under your installation.

17.1 In-App Deletion

You can delete your MathStudy data from within the App. In Settings, look for the “Delete My Data” option (this feature is being finalized and will be available in a forthcoming update). When you use this option, we will delete:

  • Your session and scan history;
  • Your lifetime usage statistics (total scans, app opens, features used);
  • Your preferences;
  • Your device-specific identifier (Firebase Installation ID).

Anti-abuse counters. A small set of internal counters used to enforce free-tier scan limits (daily and monthly scan counts) is not deleted via the in-app or email deletion process. These counters reset automatically over time — daily counters reset every 24 hours, monthly counters reset at the start of each month. We retain them to prevent abuse of the free tier; this is permitted under the fraud-prevention exception described in Section 17.4. They contain no personally identifiable information.

17.2 Web-Based Deletion Request

You can also request deletion by emailing support@amoozstudio.app with the subject line “Delete My Data.” In your email, please include:

  • The approximate date you first installed MathStudy;
  • Any information that can help us locate your data (for example, your subscription email if you purchased premium, or a device model).

We will delete your data within 30 days of verifying the request. To learn more about how to delete your data or make such a request, please visit our Delete My Data page.

17.3 Uninstalling the App

Uninstalling MathStudy removes the local data on your device but does NOT automatically delete the data stored in our backend (Firebase). To delete backend data, please use one of the methods above.

17.4 Exceptions

Even after your data is deleted, we may retain certain information if required by law (for example, for tax records relating to a purchase, or to comply with a legal obligation), or to resolve disputes, enforce our agreements, or prevent fraud. Any such retained information will be limited to what is strictly necessary.

18. “Do Not Track” Signals

Some browsers transmit a “Do Not Track” (DNT) signal to websites. There is no industry consensus about how websites should respond to DNT signals. Our Website does not currently respond to DNT signals. We treat all visitors the same regardless of whether a DNT signal is sent.

19. Automated Decision-Making and Profiling

We do not engage in automated decision-making that produces legal or similarly significant effects on you. The AI features of MathStudy (solving math problems, classifying difficulty) are designed to provide educational content, not to make decisions about you as an individual.

20. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. When we do, we will:

  • Update the “Last Updated” date at the top of the Policy;
  • Post the updated Policy at amoozstudio.app;
  • For material changes, take additional steps such as sending you an in-app notification or posting a notice on our Website.

We encourage you to review this Privacy Policy periodically to stay informed about our data practices. Continued use of our Services after a Privacy Policy update constitutes acceptance of the updated Policy, except where additional consent is required by law.

20.1 Historical Versions

If we make material changes, we will maintain a list of prior versions of this Privacy Policy for reasonable reference. You may request a previous version by emailing support@amoozstudio.app.

21. Severability

If any part of this Privacy Policy is held to be unenforceable by a court of competent jurisdiction, the remainder of the Policy will continue to be valid and enforceable.

22. Governing Law

This Privacy Policy is governed by the laws of the People’s Republic of Bangladesh, without regard to its conflict of law principles. However, this choice of law does not deprive you of the protection afforded to you by mandatory provisions of the law of your country of residence, including (where applicable) the GDPR, UK GDPR, CCPA/CPRA, or other data protection laws.

23. Language

This Privacy Policy is written in English. If we provide a translation, the English version will prevail in the event of any conflict or inconsistency between versions, except where local law requires a local-language version to prevail.

24. Contact Us

If you have questions, concerns, complaints, or requests relating to this Privacy Policy or our data practices, please contact us using the details below.

Developer / Data Controller:

Mahamud Hussain (trading as Amooz App Studio)

Dhaka, Bangladesh

General contact:

contact@amoozstudio.app

Privacy, support, and data rights requests:

support@amoozstudio.app

Website: amoozstudio.app/

We aim to respond to all inquiries within a reasonable period, and within 30 days for formal privacy requests under GDPR, CCPA/CPRA, or similar laws.