4=10 vs Longest River
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
4=10
A casual number puzzle game for all ages. Combine four given numbers using basic math operations to reach the target of 10. It offers a relaxing experience that improves mental math skills and number familiarity.
- Combine four numbers to equal 10
- Basic math operations
- Gradually increasing difficulty
- One-handed play
- Improves mental math skills
- Relaxing and soothing gameplay
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4=10 is a simple number puzzle game suitable for all ages. The objective is to use four given numbers and combine them in an expression that equals 10. For example, you can solve it by adding 1, 2, 3, and 4 together (1+2+3+4=10). The game relies on basic math operations and starts off easy, gradually increasing in difficulty. It's designed to be a relaxed and soothing experience. You can play it with just one hand, using your phone whenever and wherever you like. By playing this game, you'll become more comfortable with numbers and improve your basic math skills, including mental calculations, using parentheses, and following the correct order of operations. Enjoy the game and happy calculating! :)
Longest River
A logic puzzle game where you create the longest possible river paths using stone blocks. Enjoy a relaxing experience with nature and piano sounds as you test your IQ and complete challenging levels.
- Create longest river paths
- Logical brain puzzle
- Relaxing soundtrack
- No time limits
- Undo button
- Suitable for adults and kids
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Are you looking for a new water flow logical puzzle? Do you want this path puzzle to be challenging and relaxing at the same time? Play Longest River, a new flow water maze puzzle in which you need to create the longest river paths using blocks of stones all while enjoying the peaceful sounds of nature and piano. Download the water connect flow puzzle now, and see if you can complete all levels. ◆ LOGICAL BRAIN PUZZLE GAME WITH RELAXING PUZZLE SOUNDS Test your IQ in this river flow puzzle game. Our river puzzle blends a flow finder, grid, and path puzzle challenge and puts you on a mind-teasing quest. Analyze the flow, and where other blocks are placed. Follow the river path length in the top left corner to see the target. Then try to achieve it to complete the level. ◆ PASS ALL LEVELS WITH GOLD In this relaxing puzzler, the current and target river path lengths are located in the top left corner. You need to achieve the bronze target in order to pass the level. But don’t settle for the basic achievement. Try to complete the gold targets and become the ultimate river puzzle master. ◆ LONGEST RIVER PUZZLE GAME FEATURES: ● make the longest river path possible ● reach the bronze target to complete the level ● aim for the gold as a top puzzle challenge ● simple drag-and-drop controls ● relaxing soundtrack that blends piano and nature sounds ● no time limits – relax in the river flow free puzzle game ● undo button ● suitable for adults and kids Now it’s time to play one of the most relaxing puzzle games for adults. If you are looking for a logical puzzle brain game with a soothing ambiance you can’t go wrong with our game.
Screenshots
Verdict
The clearest difference is in-app purchases: Longest River at none against 4=10's 1. 4=10's advantage is ads (none vs shown) and ratings volume (2.6K vs 4). On price, rating, review sentiment and update cadence 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. 4=10 sells 1 one-off in-app purchase. Longest River asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for 4=10 against 5.0 for Longest River. That said, the two scores are not equally well evidenced: 4=10 has 2.6K ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 98% of 4=10's written reviews are positive against 100% of Longest River's.
4=10 ships an update every 2 months, Longest River every 3 weeks. The most recent releases landed on October 23, 2026 and October 1, 2026 respectively.
| Parameter | 4=10 | Longest River |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (2.6K ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 97.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 2.6K — better | 4 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 33 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Sveinn Steinarsson | Cloudberry Pine AB |
Customer experience
4=10
Longest River
Bugs and requests
4=10
Reported bugs
1 issue- None reported
Requested features
2 requests- Add more difficulty levels
- Introduce new gameplay modes
Longest River
Not enough reviews yet to summarise bugs or requests.
In-app purchases
4=10
- 4≠10 add-on$3.99
Longest River
No in-app purchases









