# Gravity One vs Space Alert

The clearest difference is in-app purchases: Gravity One at none against Space Alert's 1. Space Alert's advantage is iOS requirement (6.0 vs 18.0). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | Gravity One | Space Alert |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/space-alert/id993435184/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | — |
| Monetization | — | Free with in-app purchases |
| Size | 15 MB | 18 MB |
| Requires iOS | 18.0 | **6.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sami Salkosuo](https://appshunter.io/developer/820432278) | [Ocal Sonmez](https://appshunter.io/developer/523178213) |

## What reviewers say

### Gravity One

[App page](https://appshunter.io/ios/app/gravity-one/id820432275)

**Features:** macOS Compatibility

**In-app purchases:** none


### Space Alert

[App page](https://appshunter.io/ios/app/space-alert/id993435184)

Pilot a spaceship through deep space, collecting life force and avoiding obstacles. This addictive game features simple one-touch controls and endless gameplay with high score tracking.

**Highlights:** Endless gameplay, One-touch controls, Obstacle avoidance, Collect life force, High score tracking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ADS | $0.99 | one-time |


## Frequently asked questions

### Is Gravity One free?

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

### Is Space Alert free?

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

### Do Gravity One or Space Alert have ads?

Neither Gravity One nor Space Alert shows ads.

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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.*