37S vs Gravnoid
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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!
Gravnoid
Navigate the cosmos in zero gravity, dodging celestial hazards like black holes and meteor showers. Master intuitive thruster controls to survive an ever-changing sequence of challenges in this endless space adventure.
- Zero gravity navigation
- Intuitive thruster controls
- Procedurally generated challenges
- Dodge black holes and meteors
- Endless survival gameplay
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Welcome to the vastness of space where gravity is missing and danger lurks around every star. In Gravnoid, you're not just an astronaut; you're an explorer navigating the endless void of the cosmos. Feel the thrill of zero gravity as you control your astronaut using intuitive thrusters. From unyielding walls and moving barriers to the uncontrollable pull of black holes and unpredictable meteor showers, space has never been so challenging. With every run, experience a new sequence of challenges. No two adventures in the void are the same. How long can you survive the depths of space? Are you ready to defy gravity and become the ultimate spacefarer?
Screenshots
Verdict
The clearest difference is rating: Gravnoid at 5.0 against 37S's 4.0. Gravnoid also leads on update cadence (every 6 weeks vs every 5 months). On price, review sentiment, ratings volume and ads 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.
Gravnoid holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
37S ships an update every 5 months, Gravnoid every 6 weeks. Both last shipped on November 3, 2026.
| Parameter | 37S | Gravnoid |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 5 — better |
| Update frequency | Every 5 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 61 MB | 72 MB |
| Age rating | 4+ | 4+ |
| Developer | Andreii Simaranov | Schaff Games, LLC |
Customer experience
37S
Gravnoid
In-app purchases
37S
No in-app purchases
Gravnoid
No in-app purchases
