# Comet vs Gravity Trial

The clearest difference is in-app purchases: Gravity Trial at none against Comet's 1. Gravity Trial also leads on update cadence (every 5 days vs every 3 weeks) and iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Comet sells 1 one-off in-app purchase. Gravity Trial asks for nothing beyond the download.

Comet ships an update every 3 weeks, Gravity Trial every 5 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Comet | Gravity Trial |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 82 MB | 129 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [arnaud phommasone](https://appshunter.io/developer/1068614612) | [Nhung Thi Lam Thi](https://appshunter.io/developer/1877108777) |

## What reviewers say

### Comet

[App page](https://appshunter.io/ios/app/comet-go/id6759402216)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30 Coins | $0.99 | one-time |


### Gravity Trial

[App page](https://appshunter.io/ios/app/gravity-trialplant-jump/id6760386779)

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

**In-app purchases:** none


## Frequently asked questions

### Is Comet free?

Comet is free to download, with in-app purchases available.

### Is Gravity Trial free?

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

### Do Comet or Gravity Trial have ads?

Both Comet and Gravity Trial show ads.

### Which is updated more often, Comet or Gravity Trial?

Comet ships an update every 3 weeks, and Gravity Trial every 5 days. Most recently, Comet was updated on October 24, 2026 and Gravity Trial on October 25, 2026.

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