Color Sudoku
Help and support
Ran into a problem or have an idea? Check the common questions first; if you don't find an answer, write to us with the form below. A real person reads every message and replies within 2 business days.
Common questions
How do I play?
Place each color exactly once in every row, column and box. Tap an empty square, then pick a color from the palette below. Every color plays a note, so filling the board makes a melody. Boards grow from 4×4 to 6×6 and 9×9.
How do hints and coins work?
A hint places the right color in the right square and explains why. You earn coins by finishing levels (more stars, more coins) and from the daily gift, and you can trade coins for hints in the Store. There are no real-money purchases in the app.
Where is my progress saved?
Your progress, coins and settings are stored on your device; no account is needed. Deleting the app also deletes the progress on the device.
How do I turn off sound or vibration?
Tap pause during a game, or Settings on the home screen; sound effects, music and vibration each have their own switch.
I find some colors hard to tell apart
Every color has its own shape (heart, star, leaf…). In Settings → Tile style you can choose shapes, colors only, or numbers.
What data do you collect?
Only anonymous gameplay data (moves, timings) to improve the game. We don't collect your name, email or location. Details are in the privacy policy, and you can turn data sharing off in Settings.
Privacy policy and data deletion steps: Privacy policy · Delete my data