Last updated: April 15, 2026
Uncross ("the app") is a posture habit tracker for iPhone and Apple Watch. Your privacy is important to us. This policy explains what data the app accesses and how it is used.
Uncross does not collect, transmit, or share any personal data with external servers or third parties.
All data remains on your device.
The app uses your device's motion sensors to detect when you are sitting, in order to send posture reminders. This data is processed entirely on-device and is never transmitted off your device.
The app may read and write health-related activity data via Apple's frameworks. This data is stored locally and within Apple's Health ecosystem, subject to Apple's own privacy policy.
The app uses local notifications to remind you to check your posture. These are scheduled on-device and do not involve any external servers.
The app stores your daily posture session history (sitting time, crossing estimates, notification responses) locally on your device via an App Group shared between the iPhone and Apple Watch apps. This data never leaves your device.
We do not sell, share, or transmit your data to any third party.
All app data can be deleted by uninstalling the app from your iPhone and Apple Watch.