Sum Fun vs 8x7 Kevin
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! • Regular 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!
8x7 Kevin
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Small mental arithmetic game with three modes : standard/uncompleted/equation. Choice on the operators to use, the difficulty, the number of operations. High score system.
Screenshots
Verdict
The clearest difference is ads: 8x7 Kevin at none against Sum Fun's shown. 8x7 Kevin also leads on iOS requirement (12.0 vs 15.0). Sum Fun's advantage is update cadence (every 11 days vs every 3 months). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Sum Fun ships an update every 11 days, 8x7 Kevin every 3 months. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.
| Parameter | Sum Fun | 8x7 Kevin |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (33 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 33 — better | — |
| Update frequency | Every 11 days — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 183 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Greg Sharpe | Marie Berlioz |
In-app purchases
Sum Fun
No in-app purchases
8x7 Kevin
No in-app purchases









