# Planet Gravity vs OOH

The clearest difference is price: OOH at Free against Planet Gravity's $11.00. OOH also leads on in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

OOH is free to download; Planet Gravity costs $11.00 up front. Planet Gravity sells 1 one-off in-app purchase. OOH asks for nothing beyond the download.

Planet Gravity ships an update every 4 months, OOH fortnightly. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Planet Gravity | OOH |
| --- | --- | --- |
| Price | $11.00 | **Free** |
| Rating | **[4.2 (54 ratings)](https://appshunter.io/ios/app/planet-gravity-simulateorbit/id1566504157/reviews)** | — |
| Number of ratings | **54** | — |
| Positive reviews | 44.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 108 MB | 15 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oscar Tsang](https://appshunter.io/developer/416987065) | [家回 罗](https://appshunter.io/developer/1478554929) |

## What reviewers say

### Planet Gravity

[App page](https://appshunter.io/ios/app/planet-gravity-simulateorbit/id1566504157)

Engage in a physics-based game simulating asteroid flight and solar system creation. Complete missions to explore the universe and pass the time. Discover other titles for freeform universe building.

**Highlights:** Physics-based gameplay, Asteroid simulation, Solar system creation, Level-based missions, Universe exploration

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Golden Pass | $2.99 | one-time |


### OOH

[App page](https://appshunter.io/ios/app/ooh/id1625549221)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Planet Gravity free?

Planet Gravity costs $11.00, and also offers in-app purchases.

### Is OOH free?

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

### Do Planet Gravity or OOH have ads?

Planet Gravity shows ads; OOH does not.

### Which is updated more often, Planet Gravity or OOH?

Planet Gravity ships an update every 4 months, and OOH fortnightly. Most recently, Planet Gravity was updated on September 23, 2026 and OOH on September 13, 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.*