Aegle

Discover personal connections between what you eat and how you feel.

Aegle is a personal nutrition and symptom diary that turns your own food and outcome logs into statistical insights, all on your device, with no account and no server.

Coming soon to Google Play. Aegle is currently in closed testing. The first public release will appear here when it is live on the Play Store.

What it does

Diary

Log nutrition events (foods, ingredients, products) and outcome events (symptoms, energy, sleep) as they happen.

Oracle

An on-device machine-learning model fits your data and surfaces likely links between intake items and outcomes across several post-intake time windows.

Smart entry

Built for fast logging. Aegle surfaces the items you reach for most often and adapts to the way you use the app, keeping each entry to just a few taps.

Private by design

Data lives in an encrypted local database. The app declares no internet permission, so it cannot transmit anything off your device.

How privacy works

All entries are stored in an encrypted Hive database (AES-256-GCM) inside the app's private storage.
The encryption key is generated locally and held in the Android Keystore.
The release Android manifest contains no INTERNET permission, so the app cannot reach the network.
No analytics, no crash-reporting SDKs, no advertising, no third-party data sharing.
Export to JSON is opt-in and user-initiated; uninstalling the app removes all data.

Read the full privacy policy.

Medical disclaimer

Aegle is a personal tracking tool, not a medical device. The Oracle shows statistical observations from your own data and does not provide medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before making changes to your diet or health routine.