Privacy Policy — Lumina

Last updated: 18 April 2026

Lumina is developed by Quantbit Studios. This policy explains what data we collect, how we use it, and your rights.

1. Data we collect

• Chat messages — messages you send to AI tutors are processed by OpenAI's API. We do not store these on our servers.
• Purchase information — subscription and payment data is handled by RevenueCat and your device's app store. We do not see or store payment card details.
• Usage data — basic app analytics (screens visited, session length) may be collected to improve the app.

2. How we use your data

• To provide AI tutor responses via OpenAI
• To manage your subscription via RevenueCat
• To improve app performance and user experience

3. Third-party services

Lumina uses the following third-party services, each with their own privacy policies:

• OpenAI — AI chat processing
• RevenueCat — subscription management
• Google Play — app distribution

4. Data sharing

We do not sell your personal data to any third party. Data is shared only with the service providers listed above, solely to operate the app.

5. Data retention

Chat messages are not retained by Quantbit Studios. Purchase records are retained by RevenueCat in line with their policy. Local app data (progress, settings) is stored on your device and deleted when you uninstall the app.

6. Children

Lumina is not directed at children under 13. We do not knowingly collect data from children under 13.

7. Your rights

You may request deletion of any data associated with your account by contacting us. Under UK GDPR you have the right to access, correct, or erase your personal data.

8. Contact

Email: talkatlasapp@gmail.com

Developer: Quantbit Studios, United Kingdom