Keep it Flowing vs 37S
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Keep it Flowing
A simple and relaxing puzzle game where players swipe to align pipes and maintain fluid flow. Enjoy soothing music and compete on global leaderboards.
- Simple gameplay
- Relaxing music
- Universal app
- Game Center leaderboards
- Fluid flow mechanics
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Keep it Flowing is a simple relaxing game in which you have to keep the fluid flowing. Just swipe left or right to align the pipes and keep it flowing. Features: - Simple gameplay - Relaxing and soothing music - Universal game - Game Center leaderboard
37S
A challenging arcade game where players must navigate a square through a maze of moving blocks and walls for 37 seconds. It's an addictive test of reflexes and precision, rumored to be used by the US Air Force for pilot training.
- Hold and drag gameplay
- Avoid moving blocks and walls
- Test reflexes and precision
- Addictive challenge
- Simple controls
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To start the game click and hold the square in center of screen. The aim of the game is to move the square around the screen without touching the wall or getting hit by any of the blocks and walls. It's been said that the US Air Force use this to test their fighter pilots. If you can go longer than 37 seconds you are phenomenal. Give it a try but be careful...it's addictive!
Screenshots
Verdict
Keep it Flowing and 37S both sit at 4.0 stars, but that hides the real split: 100% of 37S's written reviews are positive against 33% of Keep it Flowing's. Keep it Flowing's advantage is iOS requirement (6.0 vs 13.0). On price, rating, ratings volume 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.0 for Keep it Flowing against 4.0 for 37S. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews are what separate them: 33% of Keep it Flowing's written reviews are positive against 100% of 37S's.
Keep it Flowing ships an update every 6 months, 37S every 5 months. The most recent releases landed on October 7, 2026 and September 28, 2026 respectively.
| Parameter | Keep it Flowing | 37S |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) | 4.0 (2 ratings) |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 2 |
| Update frequency | Every 6 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 6.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 175 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Avakai Games Private Limited | Andreii Simaranov |
Customer experience
Keep it Flowing
37S
In-app purchases
Keep it Flowing
No in-app purchases
37S
No in-app purchases
