Sum Fun vs Brain Dots
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!
Brain Dots
A challenging puzzle game where you draw lines and shapes to make two balls collide. Collect different drawing tools and create your own levels to test the skills of players worldwide. It's a test of logic and flexible thinking.
- Bump two balls to clear stages
- Draw lines and shapes freely
- Collect over 25 varieties of pens
- Create and share custom stages
- Review and share victory moments
- Tests logical thinking and flexibility
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Over 50 million downloads! The only thing you need to do is to “bump two balls.” Will you be able to clear these simple-looking but actually difficult stages? ▼ The rules are simple! ◆ Let's bump the two balls All you need to do to clear a stage is to “make the blue and red balls bump”. Draw lines and shapes freely to move and roll the balls. Flexible thinking is going to become the key to victory. ◆ Let's collect pens Starting off with a simple pencil, moving onto color pencils, crayons and so on. We have prepared more than 25 varieties of pens of different colors and sizes. Collect various pens and walk through the stages. ◆ Share the moment of victory You can review the moment you cleared a stage on video or picture. Share it on SNS to show off your superior skills to your friends. Not to mention that watching your friends’ gameplay might also become a hint!? ◆ Create Stages Create your own stages and see if users all over the world can solve them. Over 3 million stages already created! ◆ Your brain abilities will be tested This game, continuing after Brain Wars, also tests your logical thinking and the flexibility of your mind. As this game includes the elements of riddle and “Escape the Room” type of games, we would recommend Brain Dots to people who enjoy brain-type puzzles, cards and strategy games. It might also have an impact on your children’s intellectual growth and preventing brain deterioration? ▼ Languages 15 languages! Brain Dots is played all over the world! Japanese / English / Korean / Traditional Chinese / Simplified Chinese / Spanish / French / Portuguese(Brazil) / Swedish / Finnish / Russian / Vietnamese / Thai / Indonesian / Hindi ▼ Latest information Twitter:@braindots_app Facebook:https://www.facebook.com/braindotsapp
Screenshots
Verdict
The clearest difference is review sentiment: Sum Fun at 100% against Brain Dots's 50%. Sum Fun also leads on rating (4.9 vs 4.4) and in-app purchases (none vs 10). Brain Dots's advantage is ratings volume (8.2K vs 33). On price, update cadence, ads and device support 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. Brain Dots sells 10 one-off in-app purchases. Sum Fun asks for nothing beyond the download.
Sum Fun holds the better App Store score, 4.9 against 4.4. That said, the two scores are not equally well evidenced: Brain Dots has 8.2K 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 50% of Brain Dots's.
Sum Fun ships an update weekly, Brain Dots every 11 days. The most recent releases landed on September 18, 2026 and September 22, 2026 respectively.
| Parameter | Sum Fun | Brain Dots |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (33 ratings) — better | 4.4 (8.2K ratings) |
| Positive reviews | 100.0% of reviews — better | 49.9% of reviews |
| Number of ratings | 33 | 8.2K — better |
| Update frequency | Weekly — better | Every 11 days |
| 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 — better | 15.6 |
| Further details — not scored | ||
| Size | 195 MB | 62 MB |
| Age rating | 4+ | 12+ |
| Developer | Greg Sharpe | Translimit, Inc. |
Customer experience
Sum Fun
Brain Dots
Bugs and requests
Sum Fun
Not enough reviews yet to summarise bugs or requests.
Brain Dots
Reported bugs
3 issues- Crashes when trying to create own levels
- Hint feature not working as expected
- Inability to play on iOS 17 devices
Requested features
4 requests- Ability to save and transfer progress across devices
- Option to disable hint prompts
- More advanced level creation tools
- Improved Apple Pencil support
In-app purchases
Sum Fun
No in-app purchases
Brain Dots
- Mechanical pencil$0.99
- Pen$0.99
- Colored pencil$0.99
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- Crayon$1.99
- Brush$1.99
- Watercolor painting brush$1.99
- Decorated pen$2.99
- Rainbow pencil$2.99
- Fountain pen$3.99
- Remove Cut-In Ads$3.99









