Fendoku support
Updated September 28, 2026. Developer: Nathan Fennel.
Playing
Choose Campaign, Daily Challenge or Zen. The puzzle goal is one piece in each row, column and colored region, with no two pieces touching, including diagonally. Open Settings → How to Play for the app's controls. Themes and gameplay preferences are available from the app's theme picker and settings.
Saved progress and iCloud
If a save fails, keep the app open and use the displayed retry control after resolving the storage problem. If saved data cannot be opened, the app preserves the files and offers Retry. Avoid deleting the app as a first troubleshooting step because local settings and custom themes may not have another copy.
For progress synchronization, use the same Apple Account with iCloud available on your devices. Settings shows the sync status and a Retry iCloud sync control. This feature synchronizes progress, not custom themes or settings. Signing in to Game Center is separate from iCloud progress sync; Apple account and service configuration affect leaderboards and achievements.
Get help
When contacting the developer, include your device, OS version, app version and the action that failed. Do not send passwords or private account credentials. See the privacy policy for local storage, iCloud, Game Center and sharing details.