How we handle your data in MaestLog
All your concert logs are stored locally on your device using Apple's SwiftData framework. While concert data stays on your device, we use RevenueCat for subscription management and Apple Sign In for authentication, which involves minimal external communication.
We do not collect personal information or usage analytics for concert data. However, for premium features (background customization), we collect subscription purchase history via RevenueCat and minimal authentication information when using Apple Sign In.
Concert record data is not shared with third parties. However, for payment processing we share purchase history with RevenueCat Inc. (US), and for authentication we share authentication data with Apple Inc. (various countries). Both companies comply with appropriate privacy protection standards. RevenueCat Privacy Policy: https://www.revenuecat.com/privacy
Your data is protected by iOS's built-in security features including device encryption when enabled. We recommend using device passcode and Face ID/Touch ID for additional security.
You have complete control over your data. You can export, delete, or modify your concert logs at any time through the app. Data deletion is permanent and cannot be recovered.
If you have questions about data handling, please contact us at sho.yuba48@gmail.com
Last updated: September 24, 2025