Privacy Policy
Effective date: May 19, 2026
This Privacy Policy describes how SageLens ("we", "our", or "the App") collects, uses, and protects information when you use our language-learning application on Android and iOS devices.
1. Information We Collect
Audio Data
The App requests access to your device microphone (android.permission.RECORD_AUDIO) to provide voice-based learning features. Audio is processed in real-time and is not stored on our servers beyond what is required to fulfill the immediate request.
Account Information
Email address and display name provided at registration.
Usage Data
Lesson progress, vocabulary quiz results, and session statistics used to personalise your learning experience.
Device Information
Device type, operating system version, and app version for crash reporting and compatibility purposes.
2. How We Use Your Information
- To provide and improve language-learning features, including AI voice tutoring.
- To personalise lesson content based on your progress and preferences.
- To send optional push notifications for daily practice reminders.
- To diagnose crashes and maintain app stability.
3. Third-Party Services
The App may use the following third-party services, each subject to their own privacy policies:
Google Firebase
Authentication, analytics, and push notifications.
Google Gemini / Speech APIs
AI language processing and speech-to-text.
RevenueCat
Subscription management.
Google Sign-In
Optional OAuth login.
Chargily Pay
Payment processing for Algerian users.
4. Data Retention
We retain your account and usage data for as long as your account is active. Audio data is not retained beyond the duration of a real-time API call. AI chat session data is retained for up to 90 days after your last activity, or until account deletion — whichever comes first. You may request deletion of your account and associated data at any time by contacting us or via the in-app delete account option.
5. Your Rights & Controls
- Revoke microphone permission in device settings.
- Disable push notifications in App settings.
- Request access, correction, or deletion of data.
6. Security
We use industry-standard measures (TLS in transit, server-side encryption at rest) to protect your data. No method of electronic transmission is 100% secure; we cannot guarantee absolute security.
7. Contact Us
For questions or data requests regarding this policy, contact our privacy and legal teams:
8. Changes to This Policy
We may update this policy periodically. Changes will be posted here with an updated effective date. Continued use of the App after changes constitutes acceptance of the revised policy.