Support

Questions, problems or ideas: write to [email protected]. We usually answer within a few days. Please mention your Android version and the app version shown at the bottom of Settings in the game.

Frequently asked

How do I restore the "Remove ads" purchase?

Open Settings in the app and tap Restore purchase. The phone must be online and signed in to the Google account that made the purchase. Google Play keeps the purchase with that account, so it can be restored on a new phone or after a reinstall. If Play says the item is already owned but ads still show, restart the app once; the entitlement is re-checked on every launch.

How do I reset my progress?

Colordoku has no reset button, and progress is stored only on your phone. To start over, clear the app's storage under Android Settings → Apps → Colordoku → Storage → Clear storage, or uninstall and reinstall the app. This also removes coins, items and Daily Challenge trophies, and it cannot be undone. The "Remove ads" purchase is not affected; restore it from Settings afterwards.

How does the Daily Challenge work?

Every calendar day (by your phone's local date) there is one 9×9 puzzle, the same for everyone in the world. Finishing it earns a trophy and +50 coins. Finish it on consecutive days to grow your streak; miss a day and the streak starts again at one. A new puzzle appears at midnight; an unfinished one is not carried over.

Is every level really solvable without guessing?

Yes. All 500 levels and the daily puzzles are generated with a single solution and checked to be solvable by the same deductions the Hint button explains. If you are stuck, tap Hint: it points at the next step and explains why.

What do hints and finds cost?

A hint or a find costs 200 coins. You earn +20 coins per finished level and +50 per daily puzzle. If you own a hint or find item from the gift pack, it is used first; with no items and too few coins, the game offers a short rewarded video instead. Rewarded videos only play when you tap to watch one.

Does the game work offline?

Yes, completely: levels, hints, the Daily Challenge and the shop all work without a network. Only ads, the consent form and the "Remove ads" purchase need a connection.

How do I change the language or theme?

Open Settings. The language picker overrides your phone's language for this app only; the theme switch chooses light or dark.

How do I delete my data?

Everything the app stores is on your phone: uninstall Colordoku or clear its storage. See the privacy policy for what Google AdMob and Google Play hold on their side.