1. Home
  2. 🎮 Games
  3. Sum Fun
Sum Fun

Sum Fun

Sharpen your mind, stress-free

33 ratings
47 reviews
With Ads
🎮 Games
📚 Education
🎲 Board
🧩 Puzzle
Free
With Ads

Details

  • Released
  • Updated
  • March 13, 2014
  • September 10, 2026

Features

Developer

Greg Sharpe
✨Promote your app ✨
Sum Fun screenshot #1 for iPhone
Sum Fun screenshot #2 for iPhone
Sum Fun screenshot #3 for iPhone
Sum Fun screenshot #4 for iPhone
Sum Fun screenshot #5 for iPhone
iphone
ipad
⭐47
Reviews↘︎
🔄6+ apps
Alternatives↘︎
🎪1 happening
Events↘︎
🏆3 achievements
Achievements↘︎
❓8 answered
FAQ↘︎
📦~ in 1 week
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

A unique number puzzle game that combines logic, numbers, and strategy. Enjoy endlessly replayable puzzles with creative board shapes and a brain-boosting gameplay experience. Play at your own pace with no time limits and challenge friends.

✓Unique number puzzle gameplay
✓Variety of creative board shapes
✓Brain-boosting mental workout
✓No time limits for relaxed play
✓Challenge friends offline
✓Easy to play, fun to master
Show original description

What's New in Sum Fun

2.11

September 10, 2026

We're starting September with Sum extra Fun! • Play our new Cat shape, part of the limited-time Nature collection • Collect unique artwork inspired by our travels in our Postcard Challenge • The Beginner shape collection has expanded, including Pine Tree and Egg • We've improved the home screen for tablets, automatically showing you game stats in landscape orientation • More appearance customisations are available, including experimental board colourings to add a splash of colour to your games

More

Events

Read more about Sum Fun Nature Collection
AvailableNew Season

Sum Fun Nature Collection

Limited-time shapes, including Cat & Butterfly

Sep 11, 2026 — Oct 12, 2026

Read More

Read more about Venice Impressions
Event EndedSpecial Event

Venice Impressions

Collect unique art inspired by Venice, Italy

Sep 4, 2026 — Sep 15, 2026

Read More

Read more about Sum Fun Summertime Collection
Event EndedNew Season

Sum Fun Summertime Collection

Play our new Summertime shapes

Jul 8, 2026 — Jul 31, 2026

Read More

See All

User reviews

Most RecentHighest RatedLowest Rated

Great game!

Great and very creative way to exercise the brain. Many different and interesting shapes to try! Really makes you think! Got to try them all.
HappySnowflakeHappySnowflake

Very fun!

Enjoyable game
 Goofygoober Goofygoober

Sum fun

Great gameplay, and for a change no annoying ads! Thank you!
tess*98tess*98

Good

Can’t stop playing this
KimngnnKimngnn

Chơi game này nếu bạn muốn luyện não!

Game toán - chiến thuật vui vẻ mà không bị khô khan. Phù hợp với mọi lứa tuổi kể cả trẻ em. Chơi lâu hơi đau đầu với người không thích toán. Màu game đẹp, nhiều hình thú vị, hướng dẫn rõ ràng. Đáng để chơi!
Stacey Jessica JenniferStacey Jessica Jennifer
See 42 more reviews

Developer apps

Zero?
Zero?

The Zoom and Zen number game!

🎮 Games

(4)

Free
See developer apps

FAQ

What is Sum Fun?

Sum Fun is a number puzzle game that combines logic, numbers, and strategy. It offers a unique twist on number-based puzzles with various creative board shapes and brain-boosting gameplay.

How do you play Sum Fun?

The core gameplay involves placing numbers into empty slots. If a number matches the last digit of the sum of its neighbors, they are cleared. If not, players strategically place numbers to set up future sums until the board is empty.

Can I play Sum Fun offline?

Yes, Sum Fun can be played offline. You can challenge friends by sharing games via QR code, text code, or simply passing the device for local multiplayer.

Does Sum Fun have ads?

Sum Fun contains advertisements. It features banner ads and optional rewarded ads for extra content, but no intrusive pop-up ads that interrupt gameplay.

What devices is Sum Fun available on?

Sum Fun is available on iPhone, iPad, and iPod. It is designed for iOS devices.

What is the age rating for Sum Fun?

Sum Fun has an age rating of 4+, making it suitable for a wide range of players.

How often is Sum Fun updated?

The latest version of Sum Fun is 2.6, and it was last updated on March 25, 2026. This indicates a history of updates, though the exact frequency is not specified.

What makes Sum Fun different from Sudoku or Kakuro?

Sum Fun offers a unique gameplay mechanic where placing a number can clear adjacent numbers based on a sum rule, unlike the fixed grid and elimination rules of Sudoku or Kakuro.