Support & FAQ

Write to support@killersudoku.andrewboyko.name — include your device model, OS version and the app version (Settings → About). We usually reply within two business days.

How do I restore my purchase?

Open Settings → Restore purchases. Make sure you are signed in to the same Apple ID or Google account that bought Pro.

How do I cancel my subscription?

iOS: Settings → your name → Subscriptions → CageDoku. Android: Google Play → Profile → Payments & subscriptions → Subscriptions → CageDoku.

Will I lose my progress if I change phones?

Progress is stored on the device. A cloud backup (iCloud / Google backup) restores it when you restore the whole phone. In-app sync is planned.

What are streak freezes?

Pro includes two streak freezes per month. A freeze automatically covers a missed day so your streak survives.

How do hints work?

Free: three hints per day. Every hint names a technique, highlights the cells and explains the step. Pro has unlimited hints.

I found a puzzle that seems to have two solutions

Please send the puzzle ID (shown under Info in the game menu). Every puzzle is verified for a unique solution, but we want to know if one slips through.

Privacy

See the privacy policy.