Diabetes Feast

What Data We Read

The app reads the following from Apple Health with your permission: blood sugar, exercise, and weight. This data is used solely to calculate and display GMI, exercise, and weight trends.

What We Do Not Do

• The app never writes data to Apple Health.
• The app does not transmit your data to any external server.
• The app does not use analytics or advertising frameworks.

Data Storage

All data is stored locally on your device using Core Data storage with iOS default file protection. Your health information never leaves your device unless you explicitly choose to share it.

Sharing

You can export all your data at any time from the Export screen — either as a full JSON file (covering blood sugar readings, meals, exercise sessions, GMI estimates, and your profile) for device migration or backup, or as an Excel file providing a clinician-friendly summary of GMI estimates, lab HbA1c results, meals, and exercise sessions suitable for sharing with your doctor. No data leaves the device until you choose where to send it.

Your Control

• You can revoke HealthKit access at any time in Settings > Health > Data Access & Devices.
• You can delete all app data by uninstalling the app.
• You can wipe all app data at any time from the User Setup screen. This permanently deletes your blood sugar readings, meals, exercise sessions, GMI estimates, and personal profile — but your My Menu food items are preserved so you don't have to rebuild them. No data can be recovered after a wipe.

Contact

If you have questions about this privacy policy, please contact us at rockjapan@mac.com.