Last updated: July 2026
Yuralog ("the app") puts your privacy at the center of its design.
The app collects no personal information whatsoever. Your symptom records, notes, self-check results, and settings are all stored only on your device. Neither the developer nor any third party can view or obtain them.
The app has no server and no account registration. It never transmits your data externally and performs no cloud sync, including iCloud.
Only with your permission, the app reads sleep, cycle, and wrist skin temperature data on a read-only basis to display it on screen alongside your symptom log. Read values never leave your device, are not stored, and are never used for advertising or analytics. The app never writes to Health.
No ads are shown. No behavioral analytics SDKs or tracking of any kind are included.
If you use the encrypted backup feature, you yourself export a file encrypted with your passphrase to a destination you choose (e.g. the Files app). Managing that file is up to you.
If you have any questions, please contact us at freetokyo2020@yahoo.co.jp.