# Mission Gravity vs PlanetCrystals Inc

The clearest difference is in-app purchases: PlanetCrystals Inc at none against Mission Gravity's 2. PlanetCrystals Inc also leads on iOS requirement (11.0 vs 13.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Mission Gravity sells 2 one-off in-app purchases. PlanetCrystals Inc asks for nothing beyond the download.

Mission Gravity ships an update every 5 days, PlanetCrystals Inc weekly. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Mission Gravity | PlanetCrystals Inc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (20 ratings)](https://appshunter.io/ios/app/mission-gravity/id1449420256/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 141 MB | 121 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Obergrussberger](https://appshunter.io/developer/926088841) | [Ruslan Shevtsov](https://appshunter.io/developer/1125503506) |

## What reviewers say

### Mission Gravity

[App page](https://appshunter.io/ios/app/mission-gravity/id1449420256)

Pilot your spacecraft home by utilizing planetary gravity and managing fuel. Navigate through asteroid fields and aim for a smooth landing to complete your mission.

**Highlights:** Gravity-based flight mechanics, Fuel management, Asteroid avoidance, Clean landing challenges, Physics simulation

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Unlock all levels | $1.99 | one-time |


### PlanetCrystals Inc

[App page](https://appshunter.io/ios/app/planetcrystals-inc/id6465685972)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mission Gravity free?

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

### Is PlanetCrystals Inc free?

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

### Do Mission Gravity or PlanetCrystals Inc have ads?

Neither Mission Gravity nor PlanetCrystals Inc shows ads.

### Which is updated more often, Mission Gravity or PlanetCrystals Inc?

Mission Gravity ships an update every 5 days, and PlanetCrystals Inc weekly. Most recently, Mission Gravity was updated on November 2, 2026 and PlanetCrystals Inc on October 30, 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.*