Private cycle tracking on your device
Your health data stays on your device. We cannot see it, access it, or share it.
All data is encrypted via iOS storage when your device locks.
Apple Health integration is optional. With your permission, Ondi reads sleep and Apple Watch wrist temperature from Apple Health. Saving your period dates and spotting to Apple Health is off until you turn it on. If you use a smart ring, Ondi can also save the ring's sleep to Apple Health: the "Save ring sleep to Apple Health" setting is off on a new install (an install that already had it on keeps it), and you can change it in Ondi's ring screen. Ring sleep is only added for nights that have no sleep from an Apple Watch or another app. This data exchange happens entirely on your device, through Apple Health. We never see this data.
All payments are processed via the Apple App Store. No financial details reach Ondi.
All notifications are local and device-side. No server is involved.
When you open the “More from Blue Flame Games” screen and its saved list is more than a week old, Ondi asks Apple’s public App Store lookup for the current names and icons of our other apps; the request contains only those apps’ App Store IDs and your device’s country code. No health data is ever included.
Delete all data from within the app's settings, or export your data as JSON. Uninstalling the app removes everything stored in the app, except the trial start date and purchase status, which are kept in the device's keychain so they survive a reinstall. Anything Ondi saved to Apple Health stays there unless you choose "Delete from Ondi and Apple Health" when deleting your data in Ondi's settings.