Information We Collect

• Account information such as full name, nickname, email, phone number, and authentication tokens when you sign in.
• Course usage and progress needed to provide learning features.
• Purchase identifiers and status from the app store to unlock content.
• Device and app details (device type, OS version, app version) for security and diagnostics.
• Notification device tokens if you enable push notifications.
• Country and region are not required for app usage.

How We Use Information

• Provide, maintain, and improve the app.
• Authenticate users and manage accounts.
• Process purchases and grant access to paid content.
• Store and sync course progress across devices.
• Send important notifications when enabled.
• Prevent fraud and enforce our terms.
• Provide AI learning features in supported courses.

AI Features and Consent

• Some course features use native on-device AI.
• Some advanced evaluation features use Google Gemini API (Google LLC).
• Before AI Student data is sent, we request explicit opt-in in-app consent ("Accept and continue").
• AI Student requests may include only user-generated content and context needed for evaluation: your submitted text or audio, selected topic, selected level, and language hint. By tapping "Accept and continue", you agree to this transfer for evaluation purposes.
• This data is transmitted securely over HTTPS. We do not store user explanation data (audio/text) or AI Student response data on our own servers, and we do not share name, email, or account identifiers with Google Gemini API.

Sharing and Third-Party Services

We use trusted providers to operate the app. They may process information on our behalf:

• Firebase (Google) for authentication, database, storage, and messaging.
• Google Sign-In as an optional login method.
• Supabase for user and course data synchronization where configured.
• Google Play Billing for in-app purchase processing.
• Google Gemini API (Google LLC) for AI Student evaluation features, used only after explicit in-app consent. Google processes this data under its own privacy and security controls.

Data Retention

We retain data as needed to provide the app and comply with legal obligations. You may request deletion at any time.

Security

We use reasonable security measures, but no method of transmission or storage is completely secure.

Children's Privacy

The app is not directed to children under 13. If you believe a child provided data, contact us.

International Users

Your information may be processed in countries where our service providers operate.

Changes to This Policy

We may update this policy from time to time and will post updates in the app or on our website.