Privacy Policy
Last updated: 18 September 2026
The short version
Kayf does not collect, store or transmit any personal data. There are no accounts, no analytics, no advertising and no tracking. The app makes no network requests of its own.
What stays on your device
Your language choice, settings, saved devices, learned devices and quiz scores are stored only in the app on your device. Deleting the app deletes them. You can also clear them from Settings, Reset progress.
Purchases
The one-time Kayf Pro purchase is processed entirely by Apple through the App Store. We receive no payment details and no identity information.
Children
Kayf is suitable for all ages and collects no information from anyone.