KBuddy 8 will store your training data locally on your device and in Health if used. If iCloud is enabled on your device, KBuddy 8 will store your training data in your private iCloud account, handeled by Apple.

If you enable tracking (thank you), KBuddy 8 will send anynous usage data to Microsoft Appcenter. This data is stored on Microsoft server including crash reports (if activated, default is off) and completly anonymous usage statistics.