Sum Fun, the puzzle game that builds your number and strategy skills! Enjoyed by both kids and adults around the world.

We’ve been busy expanding the game designs! Test your number skills in more creative ways with nine challenging modes:

• Square • Pyramid • Football • Flappy • Heart • Robot • Invader • Ghost • Turtle •

Sum Fun is –

• Easy to play
-- No time pressure – just good ol’ puzzling and problem solving. Take a number and place it into an empty square. If it matches the last digit of the sum of it’s neighbours, they’ll get blasted away. Try to empty all the squares in as few moves as possible!

• Fun to master
-- Uncover the strategies needed to get the best scores. Can’t find a place to put any of the pieces? Plan ahead by placing numbers to set up a sum for a future move.

• Fun with friends
-- Send challenges through messages or Airdrop and see who can finish the game with the fewest moves!

• Endless variety
-- Each game is created randomly – no two games are alike! Choose from eight different designs and find the strategies to solve each one!

Have Sum Fun, and exercise your mind!


“ It’s a solid math game, one that brings in interesting gameplay ideas and which has a stellar execution ”
– 9 / 10

“ By the time your kids have played with this app a few times, they’ll be adding up the numbers faster than you can say, ‘What’s six plus eight?’ ”
– Fun2Tap: 5 / 5


What’s New

Version 1.6

Make a splash this Summer with the brand new Turtle game!

Ratings and Reviews

5.0 out of 5
9 Ratings
9 Ratings
Minnielou70 ,

Thanks very much

Thanks very much for taking the time to add a new layout to the game.😀

Tweety613 ,

Fun but ...

The game freezes up when you play using the robot shape. It's happened several times. I had to delete the game. But the other shapes are fun. I would have given five stars if it didn't freeze up.

Developer Response ,

Hi Tweety613 – thanks for your comments! We’ve made a lot of changes and improvements to Sum Fun. Check out the latest version, and you should have a much more stabile experience, along with many new shapes to try! Have fun, and let us know what you think :-)

Efreet_ ,

So much fun!

It is really a cool game, I am totally addicted to it. This is officially my favorite game in my phone. I will definitely recommend it to my friends.


Greg Sharpe
32.3 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, German, Japanese, Vietnamese

Age Rating
Rated 4+
© 2018 Greg Sharpe


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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