Dayfolio Privacy Policy
Last updated: 2026-07-02
Dayfolio is an app for recording daily tasks, weight, exercise, meals, calories, goals, and similar records. This policy explains what information the app handles and why.
Information We Collect
- The account identifier, email address, display name, and profile image URL provided by your Google or Apple sign-in.
- The weight, height, date of birth, sex, activity level, target weight, meals, exercise, tasks, memos, and calorie/PFC information you enter.
- Session information, subscription status, and purchase-related IDs required for cloud sync, authentication, and billing status management.
- Advertising IDs, purchase information, device information, and diagnostic information processed by AdMob, Google Play, RevenueCat, and Cloudflare for ad delivery and for improving the stability of the app.
- App data stored in IndexedDB on your device for offline use.
How We Use Information
- Providing sign-in, identity verification, account management, and cloud sync.
- Providing the record-keeping, statistics, calorie balance, and habit management features.
- Verifying subscriptions, granting Premium entitlements, and reflecting refund, expiration, and renewal status.
- Displaying ads, managing consent, understanding usage, and preventing abuse and excessive access.
Third-Party Services
This app uses Google OAuth, Google Play Billing, Google AdMob, RevenueCat, and Cloudflare Workers / D1. Each service processes information in accordance with its own privacy policy.
Health and Fitness Information
The weight, meals, exercise, calories, and similar information you enter in this app are used for health and fitness management. This app is not intended for medical practice, diagnosis, treatment, or medical advice.
Only when you turn it on in the settings screen, the app reads the daily totals of steps, walking distance, calories burned through activity, flights climbed, and sleep duration from your device's health data (HealthKit on iOS, Health Connect on Android). The values that are read are used to compare against your goals and to show calorie balance and statistics, and they are stored on your device. If you use cloud sync, the same values are also stored on the server. The app does not write to your health data. You can stop the reading at any time from the settings screen, and no new values are read after you stop. These values are never used for advertising or provided to third parties.
Account Deletion
You can delete your account from the settings screen in the app. When you do, the account information, recorded data, sessions, and Premium management information held on the server are deleted. The local data on your device is deleted by the app as well.
See About Account Deletion for details.
Contact
Support contact is listed on the App Store and Google Play page for Dayfolio (com.mainaxt.dayfolio); open the developer contact from the store listing.