Mirror Reader Privacy Policy

Effective Date: May 24, 2026

Last Updated: May 24, 2026

This Privacy Policy explains how Mirror Reader ("Mirror Reader," "we," "us," or "our") collects, uses, stores, and shares information when you use the Mirror Reader mobile application, website, and related services (collectively, the "Service").

Mirror Reader is a reading and language-learning app that provides access to public domain books, generated covers, and generated translations. Some features may be available without creating an account. Account-based features, including sync, may require sign-in by email, Google, or Apple.

By using the Service, you agree to the practices described in this Privacy Policy. If you do not agree, please do not use the Service.

1. Who We Are

The Service is operated by Mirror Reader.

For privacy questions or requests, contact us at: [email protected].

2. Summary

This summary is provided for convenience only. The full Privacy Policy below controls.

We collect account, reading, learning, device, usage, purchase, analytics, diagnostic, and support information as described below.
We use Supabase for authentication, database, storage, edge functions, analytics/logs, and realtime sync.
We use Cloudflare for DNS, hosting/pages, CDN, Workers, R2 storage, Turnstile, Web Analytics, and related security/performance services.
We may use Apple App Analytics, Apple crash reports, Firebase Analytics, Firebase Crashlytics, and Sentry for analytics, diagnostics, and crash reporting.
Optional one-time tips are processed through Apple In-App Purchase. We do not receive your payment card details.
We do not sell personal information, and we do not use third-party advertising trackers or cross-app advertising tracking.
Current Mirror Reader translations are pre-generated. In the current version, user reading data, dictionary words, search history, and test results are not sent to an AI provider to generate translations.
You can delete your account and synced data through the deletion option in the app.

3. Information We Collect

3.1 Account and Sign-In Information

You may be able to use some features without creating an account. If you create an account or sign in to enable sync or account-based features, we may collect and store:

email address;
authentication provider, such as email, Google, or Apple;
user ID, account ID, or authentication identifier;
Apple, Google, or Supabase authentication identifiers;
display name or similar profile information if provided by your sign-in provider or by you;
account creation date, login activity, and security-related account logs.

If you use Sign in with Apple, Apple may provide a private relay email address instead of your personal email address, depending on your Apple settings. If you use email sign-in, authentication may be handled through Supabase Auth. We do not store plain-text passwords.

If you use the Service without registering, we may still use an anonymous user ID, installation ID, device identifier, or similar identifier to operate the Service, maintain security, remember local settings, support analytics, or enable limited sync-related functionality.

3.2 Reading, Library, and Learning Data

We may collect and store information about how you use reading and learning features, including:

reading progress;
bookmarks;
selected books;
preferred language;
font, theme, and display settings;
search history;
recently opened books;
favorites and library selections;
dictionary or vocabulary words saved in the app;
English test results, quiz results, scores, and related learning activity;
chapter completion and other reading activity.

This data may be stored locally on your device and may also be synchronized through Supabase so that your reading and learning state can be restored or used across sessions and devices.

Please do not save sensitive personal information in bookmarks, search fields, vocabulary entries, or other app fields unless you are comfortable with that information being processed as described in this Privacy Policy.

3.3 Purchases and Optional Tips

Mirror Reader may offer optional one-time tips or support purchases through Apple In-App Purchase. These tips are optional, do not unlock features, and are processed by Apple.

We may receive or store purchase-related information, such as:

purchase status;
product ID;
transaction ID or receipt information;
purchase history related to the Service;
refund, cancellation, or entitlement status where provided by Apple or our payment-related systems.

We do not receive your full payment card number, bank account details, or Apple Account payment credentials. Apple handles payment processing, billing, refunds, and related payment security.

3.4 Device, Usage, Analytics, and Diagnostic Data

We may collect device, usage, analytics, and diagnostic information, including:

app opens and session activity;
books opened;
chapters completed;
language selected;
purchase or tip completion events;
dictionary and vocabulary feature usage;
English test or quiz activity;
app version;
operating system version;
device model;
device identifiers or installation identifiers;
IP address;
approximate region or locale;
crash logs, error logs, performance data, and diagnostic data;
push notification token and notification preferences if you enable notifications.

We may collect this information through Apple App Analytics, Apple crash reports, Firebase Analytics, Firebase Crashlytics, Sentry, Supabase logs, and similar tools used to understand app performance, improve features, diagnose bugs, and protect the Service.

3.5 Website, Cookies, and Security Data

When you visit our website or web pages related to the Service, we may collect technical and usage information, including:

IP address;
browser type and version;
device and operating system information;
pages viewed;
referral information;
request logs;
approximate location derived from IP address;
cookie or similar technology information;
anti-abuse and bot-prevention signals.

Our website may use cookies or similar technologies for essential functionality, security, analytics, performance, and anti-abuse purposes. We may use Cloudflare services, including Cloudflare Web Analytics and Turnstile, to help operate, secure, and understand use of the website. You can control cookies through your browser settings. Where required by law, we will request consent for non-essential cookies.

3.6 Communications

If you contact us by email or through support channels, we may collect your email address, message content, attachments, and any other information you choose to provide. We use this information to respond to your request, provide support, investigate issues, and maintain records of our communications.

4. How We Use Information

We use information for the following purposes:

to provide, operate, maintain, and improve the Service;
to create, authenticate, and manage accounts;
to sync reading progress, bookmarks, library selections, settings, vocabulary, and test results;
to provide reading, dictionary, translation, and language-learning features;
to process optional tips and purchase-related records;
to send push notifications if you enable them, including reading reminders, new book notices, product updates, and purchase-related messages;
to analyze app usage and feature performance;
to detect, diagnose, and fix crashes, bugs, and technical issues;
to secure the Service, prevent fraud, prevent abuse, and protect users;
to respond to support, privacy, and legal requests;
to comply with applicable laws, App Store requirements, tax, accounting, security, and legal obligations;
to enforce our rights and protect the rights, safety, and property of Mirror Reader, users, and others.

We do not use personal information for third-party advertising tracking. We do not sell personal information.

5. AI Translations and Generated Content

Mirror Reader includes public domain books, generated covers, and generated translations. In the current version, translations are pre-generated before being made available in the Service.

In the current version, we do not send your account information, reading progress, bookmarks, selected books, preferred language, search history, recently opened books, favorites, vocabulary words, or test results to an AI provider for the purpose of generating translations.

Mirror Reader may in the future add optional features that allow users to translate user-provided books, text, notes, or other content using AI services. If such features are introduced, we will update this Privacy Policy before or at the time those features become available, and we will describe the AI providers, categories of data processed, purposes of processing, retention practices, and user choices that apply to those features.

Generated translations may contain inaccuracies and should not be treated as official literary translations.

6. How We Share Information

We may share information with the following categories of recipients:

6.1 Service Providers

We use service providers to operate, host, secure, analyze, and improve the Service. These may include:

Supabase for authentication, database, storage, edge functions, analytics/logs, and realtime sync;
Cloudflare for DNS, hosting/pages, CDN, Workers, R2 storage, Turnstile, Web Analytics, security, and performance;
Apple for App Store distribution, Apple In-App Purchase, Sign in with Apple, Apple App Analytics, crash reports, and push notification infrastructure;
Google and Firebase for Google sign-in, analytics, and crash reporting;
Sentry for error monitoring and crash diagnostics.

These providers may process information on our behalf or as independent controllers according to their own terms and privacy policies, depending on the service and context.

6.2 Legal, Safety, and Compliance

We may disclose information if we believe disclosure is necessary to comply with law, legal process, regulatory requests, App Store requirements, security obligations, or to protect the rights, safety, and property of Mirror Reader, users, or others.

6.3 Business Transfers

If Mirror Reader is involved in a merger, acquisition, financing, reorganization, sale of assets, or similar transaction, information may be transferred as part of that transaction, subject to appropriate protections and applicable law.

6.4 With Your Direction or Consent

We may share information when you direct us to do so or when you give us consent.

7. Push Notifications

If you enable push notifications, we may process a push notification token and related notification preferences to send reading reminders, new book notices, product updates, and purchase-related messages. You can disable push notifications through your device settings or in-app settings where available.

8. Legal Bases for Processing

If you are located in a jurisdiction that requires a legal basis for processing personal information, such as the European Economic Area, the United Kingdom, or Switzerland, our legal bases may include:

Performance of a contract: to provide the Service, account features, sync, purchases, and support;
Legitimate interests: to improve the Service, understand usage, maintain security, prevent abuse, and diagnose technical issues;
Consent: for optional push notifications, certain cookies, certain analytics where required, and other optional features where consent is required;
Legal obligations: to comply with tax, accounting, consumer protection, App Store, legal, and regulatory obligations.

Where we rely on consent, you may withdraw consent at any time, subject to applicable law and technical limitations.

9. Data Retention

We retain information for as long as reasonably necessary for the purposes described in this Privacy Policy, unless a longer retention period is required or permitted by law.

In general:

account information and synced reading or learning data are retained until you delete your account or request deletion, unless we need to retain limited information for legal, security, fraud-prevention, dispute-resolution, tax, accounting, or App Store compliance purposes;
reading progress, bookmarks, library selections, vocabulary words, test results, settings, and similar synced data are retained until account deletion or until you delete the relevant data where deletion controls are available;
local data may remain on your device until you delete it in the app, delete your account, or uninstall the app;
analytics, diagnostic, crash, and security logs are retained for a period reasonably necessary to analyze performance, maintain security, fix bugs, and comply with legal obligations;
purchase and tip-related transaction records may be retained as required for tax, accounting, legal, fraud-prevention, refund, or App Store compliance purposes;
support emails may be retained as needed to respond to your request and maintain business records.

Deleted information may remain in backups or logs for a limited period before being deleted or overwritten according to our backup and security practices.

10. Data Deletion and Your Choices

You can delete your account and synced data through the deletion option in the app. You may also contact us at [email protected] for privacy requests.

When you delete your account, we will delete or de-identify account information and synced data associated with your account from our active systems, except where retention is required or permitted by law or necessary for security, fraud prevention, dispute resolution, tax, accounting, App Store compliance, or other legitimate purposes.

Deleting your Mirror Reader account does not delete records maintained by Apple, Google, Firebase, Sentry, Supabase, Cloudflare, or other third-party services according to their own policies. For example, Apple may retain App Store purchase records according to Apple’s policies.

You also have the following choices:

you can disable push notifications through your device settings;
you can control website cookies through your browser settings;
you can use Apple or Google account settings to manage certain sign-in permissions;
you can uninstall the app to remove locally stored app data from your device, subject to your device operating system behavior;
you can contact us to request access, correction, deletion, or export of personal information where required by applicable law.

11. Your Privacy Rights

Depending on where you live, you may have rights to:

access the personal information we hold about you;
request correction of inaccurate personal information;
request deletion of personal information;
request a copy or portability of personal information;
object to or restrict certain processing;
withdraw consent where processing is based on consent;
appeal or complain about our response to your request;
lodge a complaint with a data protection authority.

To exercise these rights, contact us at [email protected]. We may need to verify your identity before responding to a request. We will respond within the time required by applicable law.

California and Similar U.S. State Privacy Notices

We do not sell personal information. We do not share personal information for cross-context behavioral advertising. We do not knowingly sell or share personal information of children.

Depending on your U.S. state of residence, you may have rights to know, access, correct, delete, or obtain a copy of your personal information, and to appeal a decision about your request. You may exercise these rights by using the deletion option in the app or by contacting us at [email protected].

12. International Processing

Mirror Reader is available worldwide. We and our service providers may process and store information in the United States and other countries where we or our service providers operate. These countries may have data protection laws that differ from those in your country. Where required by applicable law, we use appropriate safeguards for international transfers.

13. Security

We use reasonable administrative, technical, and organizational measures designed to protect information. However, no method of transmission or storage is completely secure, and we cannot guarantee absolute security.

You are responsible for maintaining the confidentiality of your account credentials and for securing access to your device.

14. Children’s Privacy

Mirror Reader is not directed to children under 13, or to children under the age required by applicable local law to use online services without parental consent. We do not knowingly collect personal information from children in a manner that is not permitted by law.

If you believe a child has provided personal information to us without appropriate consent, please contact us at [email protected], and we will take appropriate steps to delete the information where required by law.

15. Third-Party Links and Services

The Service may contain links to third-party websites, platforms, or services. This Privacy Policy does not apply to third-party services that we do not control. We encourage you to review the privacy policies of any third-party services you use.

16. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. When we make changes, we will update the “Last Updated” date above. If changes are material, we may provide additional notice, such as in-app notice, website notice, or other legally required notice.

Your continued use of the Service after an updated Privacy Policy becomes effective means you accept the updated Privacy Policy, to the extent permitted by law.

17. Contact Us

For questions, requests, or complaints about this Privacy Policy or our privacy practices, contact:

Mirror Reader

Email: [email protected]