Privacy Policy
Last updated: July 2026
Yuralog ("the app") puts your privacy at the center of its design.
Information we collect
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.
Servers & cloud sync
The app has no server and no account registration. It never transmits your data externally and performs no cloud sync, including iCloud.
Health data (HealthKit)
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.
Advertising & analytics
No ads are shown. No behavioral analytics SDKs or tracking of any kind are included.
Backup
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.
Contact
If you have any questions, please contact us at freetokyo2020@yahoo.co.jp.
Controller, contact and your rights
This app is provided by freetokyo, an independent developer, who acts as the data controller. For any question about this policy or about personal data, contact freetokyo2020@yahoo.co.jp. We normally reply within five business days.
If you are in the EU, the EEA or the UK, the GDPR gives you the right to access, rectify, erase, restrict and port your personal data, to withdraw consent and to object to processing. You may also lodge a complaint with your national supervisory authority.
If you are a California resident, the CCPA/CPRA gives you the right to know, delete and correct the personal information collected about you, and to opt out of its sale or sharing. We do not sell or share personal information.
Where this app stores data only on your device, we have no access to it, so most of these rights are exercised directly on the device: delete or export inside the app, or delete the app. We will still answer any request you send us.
Retention: on-device data is kept until you delete it or remove the app. Support emails are deleted 24 months after the request is closed.