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 nine 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 1.7

A few small improvements, plus preparations for the next big update coming soon with new shapes and challenges. 

Curious? Sign up as an early access tester and try it out before everyone else!

Ratings and Reviews

5.0 out of 5
10 Ratings

10 Ratings

Minnielou70 ,

Thanks very much

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

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.

dimanr ,

It Really is 'Sum Fun'

Don't despair, you do get better, as combinations
come to you faster.


Greg Sharpe
32.7 MB

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


English, German, Japanese, Vietnamese

Age Rating
Rated 4+
© 2019 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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