Last updated: June 13, 2026
KUZUSHI ("the app") is built to respect your privacy. This policy explains what data the app handles.
None. KUZUSHI does not collect, transmit, or share any personal data. The app has no account system and no analytics that identify you.
Your learning progress (completed lessons, streak, review schedule, Ear Score) is stored only on your device. It never leaves your phone and is removed if you delete the app.
Subscriptions and purchases are handled entirely by Apple through the App Store. We never see your payment information. Apple's privacy policy governs that data.
The app does not integrate third-party advertising or tracking SDKs.
KUZUSHI is suitable for all ages and does not knowingly collect data from anyone.
Questions? Email k.sho626626@gmail.com.