Sum Fun vs Shatterbrain
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sum Fun
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
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Sum Fun – The Number Puzzle Game for Sharp Minds Place numbers, match sums, blast the board! Sum Fun is the unique number puzzle that's been loved by players worldwide since 2015. How To Play (3 simple rules): 1. Place a number into any empty slot 2. If it matches the last digit of the sum of its neighbours, they get blasted away! 3. No matches? Place a number that sets up a future sum, and keep blasting until the board is empty! Why you'll love Sum Fun: • Easy to play, fun to master – just 3 simple rules, with surprising depth and strategy • 20+ creative board shapes – play on a Hexagon, Pyramid, Star, Heart, Turtle, Rocket, Butterfly, Snowflake, and many more, with new shapes added regularly! • Seasonal Postcard Challenges – play limited-time events and collect unique downloadable artwork (by real artists!) • No time limits – play at your own pace and relax while keeping your mind sharp • Challenge friends (and yourself!) – share puzzles via QR code, text code, or pass-and-play. No internet needed! • No annoying pop-up ads – your concentration stays on the puzzle, where it belongs! We play Sum Fun too, and keep the experience friendly. • Brain-boosting gameplay – after a few games, you'll be adding up numbers faster than you can say, 'What's six plus eight?' • Multiple themes – choose from Light, Dark, and Midnight to suit your style If you enjoy Sudoku, Kakuro, or other number-based brain games, you'll love the unique twist of Sum Fun. Exercise your mind, master the numbers, and discover why players keep coming back – download free today!
Shatterbrain
Engage in challenging physics puzzles by drawing shapes to find solutions. Discover multiple ways to solve each level and compete on leaderboards for the best performance. This game is designed for those who enjoy brain teasers and applying physics principles.
- Dozens of physics puzzles
- Multiple solutions per puzzle
- Leaderboard competition
- Draw shapes to solve
- Challenging gameplay
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Draw shapes to solve challenging physics puzzles. From the creator of the #1 hit puzzle game, Brain It On! ◆ Dozens of brain busting physics puzzles, with more being added all the time ◆ Multiple ways to solve each puzzle, can you find the best solution? ◆ Compete on the leaderboards for the fastest time or best solution If you enjoy brain games, have a knack for following the laws of physics, and enjoy making things shatter, then this puzzle game is for you. It's easy to learn but hard to master and will get you thinking outside the box in no time! Draw a dot, draw a line, draw whatever you need to solve the puzzle and shatter the shapes. If you like Shatterbrain, please rate it and leave a comment. Your support is greatly appreciated. If you don't like something, please email me at support@orbitalnine.com. I want to hear your feedback and comments so I can improve Shatterbrain and turn it into a hit. You can find me on Twitter at @orbitalnine, or on Facebook at http://www.facebook.com/shatterbrain, or my website: http://orbitalnine.com I hope you enjoy Shatterbrain!
Screenshots
Verdict
The clearest difference is in-app purchases: Sum Fun at none against Shatterbrain's 1. Sum Fun also leads on update cadence (weekly vs every 11 months) and rating (4.9 vs 4.6). Shatterbrain's advantage is ratings volume (436 vs 33). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Shatterbrain sells 1 one-off in-app purchase. Sum Fun asks for nothing beyond the download.
Sum Fun holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Shatterbrain has 436 ratings behind it against 33, so its average is the more settled of the two. Written reviews point the same way: 100% of Sum Fun's written reviews are positive against 86% of Shatterbrain's.
Sum Fun ships an update weekly, Shatterbrain every 11 months. The most recent releases landed on September 18, 2026 and September 22, 2026 respectively.
| Parameter | Sum Fun | Shatterbrain |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (33 ratings) — better | 4.6 (436 ratings) |
| Positive reviews | 100.0% of reviews — better | 86.0% of reviews |
| Number of ratings | 33 | 436 — better |
| Update frequency | Weekly — better | Every 11 months |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 195 MB | 112 MB |
| Age rating | 4+ | 4+ |
| Developer | Greg Sharpe | Orbital Nine Games Inc |
Customer experience
Sum Fun
Shatterbrain
Bugs and requests
Sum Fun
Not enough reviews yet to summarise bugs or requests.
Shatterbrain
Reported bugs
2 issues- Freezing or crashing on certain levels
- Issues with drawing/controls not registering properly
Requested features
3 requests- More levels and content updates
- Ability to skip levels without 3 stars
- Customizable hint/solution system
In-app purchases
Sum Fun
No in-app purchases
Shatterbrain
- Full Game$1.99









