Comparison

Sum Fun vs Shatterbrain

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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!

About

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.

Highlights
  • Dozens of physics puzzles
  • Multiple solutions per puzzle
  • Leaderboard competition
  • Draw shapes to solve
  • Challenging gameplay
Features
Read full description

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

Sum Fun4 screens
Shatterbrain4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Shatterbrain sells 1 one-off in-app purchase. Sum Fun asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Sum Fun ships an update weekly, Shatterbrain every 11 months. The most recent releases landed on September 18, 2026 and September 22, 2026 respectively.

Scorecard6 real differences · 4 level
Sum Fun versus Shatterbrain: the parameters behind the verdict, then further details
ParameterSum FunShatterbrain
PriceFreeFree
Rating4.9 (33 ratings) — better4.6 (436 ratings)
Positive reviews100.0% of reviews — better86.0% of reviews
Number of ratings33436 — better
Update frequencyWeekly — betterEvery 11 months
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size195 MB112 MB
Age rating4+4+
DeveloperGreg SharpeOrbital Nine Games Inc

Customer experience

Sum Fun

All ratings33 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews47 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Shatterbrain

All ratings436 ratings
Positive91.7%
Neutral3.9%
Negative4.4%
Written reviews164 reviews
Positive86.0%
Neutral4.3%
Negative9.8%

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

None

Sum Fun

No in-app purchases

1 purchases

Shatterbrain

One-time1
  • Full Game$1.99

Questions

Is Sum Fun free?
Sum Fun is free to download, with no in-app purchases.
Is Shatterbrain free?
Shatterbrain is free to download, with in-app purchases available.
Which has better reviews, Sum Fun or Shatterbrain?
Sum Fun is rated higher. Sum Fun averages 4.9 out of 5 from 33 ratings, while Shatterbrain averages 4.6 from 436 ratings.
Do Sum Fun or Shatterbrain have ads?
Both Sum Fun and Shatterbrain show ads.
Which is updated more often, Sum Fun or Shatterbrain?
Sum Fun ships an update weekly, and Shatterbrain every 11 months. Most recently, Sum Fun was updated on September 18, 2026 and Shatterbrain on September 22, 2026.

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