Privacy Policy

Last updated: April 13, 2026

1. What We Collect

Account data: No account creation required. An anonymous device identifier is used for subscription management only.
Habit & progress data: Your habits, logs, glow scores, and progress photos are stored locally on your device using SwiftData. They never leave your phone.
AI interactions: When you use AI features (skin analysis, chat, ingredient scanner), your text input is sent to our secure proxy server, which forwards it to OpenAI for processing. Text is not stored on our servers after processing.
Photos: Progress photos are stored locally on your device. Photos sent for AI skin analysis are processed in real-time and not retained on any server.
Analytics: We use TelemetryDeck for privacy-friendly, anonymous usage analytics. No personal information or device identifiers are collected.
Payment data: Subscriptions are processed by Apple via StoreKit. We never see or store your payment details.

2. How We Use Your Data

To provide habit tracking and glow score calculations on your device.
To deliver AI-powered skin analysis and personalized advice.
To manage your premium subscription status.
To improve the app through anonymous, aggregated analytics.

3. AI Processing

AI features use OpenAI's API via our secure Railway proxy server. Your inputs are processed in real-time and not stored after the response is generated. OpenAI does not use API inputs to train their models. See OpenAI's API data policy.

4. Data Storage

All personal data (habits, photos, logs) is stored locally on your iPhone using SwiftData. We do not operate a user database. Your data stays on your device and in your iCloud backups (if enabled).

5. Data Sharing

We do not sell, rent, or share your personal data with third parties. The only external service that receives any user input is OpenAI (via our proxy), solely for AI feature functionality.

6. Your Rights

Delete all app data by uninstalling the app.
Disable AI features and use the app fully offline (habit tracking works without internet).
Manage or cancel your subscription through Apple Settings.
Request information about your data by contacting us.

7. Children's Privacy

Glow Diary is not intended for children under 13. We do not knowingly collect data from children.

8. Changes

We may update this policy from time to time. Changes will be reflected in the "Last updated" date above.

9. Contact

Questions? Email us at bilaliyisoy@gmail.com