Rainbow sudoku with *1 million* free puzzles to play!

Heart Sudoku is a beautiful, colorful way to enjoy sudoku. Gems flip into place when you get an answer right. Tap a number to make it glow and solve the puzzle even faster. A rainbow light show celebrates your win!

There are lots of options for how to play: two keypads for faster note entry, or one with a note toggle for those who don't use many notes. Turn the timer on to compete with other players, or off to relax, whichever suits your mood. Let auto-note do the busywork for you, or leave it off for a bigger challenge. Be sure to try all three puzzle themes!

• 1 million puzzles, five levels. All Free!
• Three different puzzle themes
• Tracks your averages, records, and more
• See how you stack up against other players
• Turn off the timer for a relaxing game

What’s New

Version 3.0

What's new:
- Updates to meet new App Store requirements
- Improved support for all screen sizes

Thanks so much to everyone who has sent me feedback! Your comments are so, so helpful, and I really appreciate when people take the time to send in bug reports and other ideas. If you notice any new issues please let me know. I hope you enjoy the update! -Sarah

Ratings and Reviews

4.8 out of 5
105 Ratings

105 Ratings

❤ Sabeena ❤ ,

❤ Great Game ❤

I've been a fan of Sudoku for a number of years and this app ticks all boxes for me.
What attracted me to this app was the coloured numbers.
This aids you into playing with more ease; once you become familiar with which colour is associated with what number.
Would be great for children also, due to the coloured boxes; especially if they have difficulties recognising numbers.
And I suppose also adults who may have a learning difficulty or dyslexia.
Within the game you have three options to play the game.
The boxes can be changed from bright glossy numbers, muted numbers or the regular black numbers in a white box.
Once you become familiar with the coloured numbers, there is no going back to the plain black and white..!!
Highly addictive game.
If you're a fan of Sudoku you may find this game is worth stopping up all night for....!! 😂💤😂

Luna2174 ,

Best out there for me

I’ve played this sudoku for years I’ve tried others but always end up back to this one, the numbers are big that you enter so you never accidentally hit 4 instead of 5 etc and the colours make which number is missing easier to find.

Without doubt the best sudoku I’ve found and continue to use. In fact I’ve just downloaded a few more of Sarah’s games to try.

#1Potterhead ,

Great game

I am huge fan of number puzzles and find this game great fun to play. I especially like the coloured numbers that make it easy to spot which numbers are missing in the square/line.

App Privacy

The developer, Sarah Pierce, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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