Support

Quick answers below; write to us for anything else.

Write to us: cepsudoku@appn.app

In the app, Settings › Support and feedback › “Write to us” or “Report a bug” write to the same address. A bug report adds the app and operating system versions.

Frequently asked

Why did my streak reset?

The streak counts the days in a row you solved the daily puzzle. Miss a day and a new streak starts; the old one stays in your stats and archive.

Why does the daily puzzle change difficulty?

Monday and Tuesday are Easy, Wednesday to Sunday Medium. The daily is always on the 9×9 board, and everyone gets the same puzzle that day.

Why doesn’t a hint show the digit right away?

A hint first shows the technique and the cells involved, so you can find it yourself. Tap “Show digit” if you want the answer.

Will I lose my game?

Unfinished games are kept on your device and continue where you left off. If your phone’s own backup (iCloud or Google) is on, your progress comes to a new phone too.

How do I move from iPhone to Android (or back)?

On the old phone, connect an Apple or Google account in Settings › Backup › Moving to another phone, then sign in with the same account on the new phone. Your solved puzzles and learned techniques come along.

How do I delete my account?

Settings › Backup › Moving to another phone › Delete account. Your account and cloud progress are deleted; the progress on your phone stays.

I bought the ad-free version but see ads on my new phone.

Tap “Restore purchases” on Settings › Ad-free › Remove ads. The purchase belongs to your store account, so you need to be signed in with the same Apple or Google account. It doesn’t move between iPhone and Android.

How are ads picked, and how do I change my choice?

Before the first ad you choose “By my interests” or “General ads”. You can change it in Settings › Ad preferences. Details are in the privacy policy.

How do I turn notifications on or off?

Settings › Notifications has two switches: “Daily reminder” and “News and offers”. Both stay off until you turn them on.

I’d like a refund.

The store took the payment, so the store handles refunds: reportaproblem.apple.com for the App Store, Google Play Help for Google Play.