# 37S vs Gravnoid

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.

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.

## The numbers

| Metric | 37S | Gravnoid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/37s-37-seconds/id1602845368/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/gravnoid/id6447106539/reviews)** |
| Number of ratings | 2 | **5** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 61 MB | 72 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andreii Simaranov](https://appshunter.io/developer/1676912439) | [Schaff Games, LLC](https://appshunter.io/developer/1680348606) |

## What reviewers say

### 37S

[App page](https://appshunter.io/ios/app/37s-37-seconds/id1602845368)

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.

**Highlights:** Hold and drag gameplay, Avoid moving blocks and walls, Test reflexes and precision, Addictive challenge, Simple controls

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Gravnoid

[App page](https://appshunter.io/ios/app/gravnoid/id6447106539)

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.

**Highlights:** Zero gravity navigation, Intuitive thruster controls, Procedurally generated challenges, Dodge black holes and meteors, Endless survival gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 37S free?

37S is free to download, with no in-app purchases.

### Is Gravnoid free?

Gravnoid is free to download, with no in-app purchases.

### Which has better reviews, 37S or Gravnoid?

Gravnoid is rated higher. 37S averages 4.0 out of 5 from 2 ratings, while Gravnoid averages 5.0 from 5 ratings.

### Do 37S or Gravnoid have ads?

Neither 37S nor Gravnoid shows ads.

### Which is updated more often, 37S or Gravnoid?

37S ships an update every 5 months, and Gravnoid every 6 weeks. Most recently, 37S was updated on November 3, 2026 and Gravnoid on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*