# Spaceflight Simulator vs Genius Mechanic

The clearest difference is rating: Spaceflight Simulator at 4.8 against Genius Mechanic's 3.7. Spaceflight Simulator also leads on ads (none vs shown) and update cadence (every 9 days vs every 6 months). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Spaceflight Simulator sells 10 one-off in-app purchases and Genius Mechanic sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Spaceflight Simulator holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: Spaceflight Simulator has 97K ratings behind it against 148, so its average is the more settled of the two. Written reviews point the same way: 86% of Spaceflight Simulator's written reviews are positive against 64% of Genius Mechanic's.

Spaceflight Simulator ships an update every 9 days, Genius Mechanic every 6 months. The most recent releases landed on September 26, 2026 and August 4, 2026 respectively.

## The numbers

| Metric | Spaceflight Simulator | Genius Mechanic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (97K ratings)](https://appshunter.io/ios/app/spaceflight-simulator/id1308057272/reviews)** | [3.7 (148 ratings)](https://appshunter.io/ios/app/genius-mechanic/id1497678980/reviews) |
| Number of ratings | **97K** | 148 |
| Positive reviews | **85.5% of reviews** | 64.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 6 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 172 MB | 166 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Spaceflight Simulator UK Ltd](https://appshunter.io/developer/1308057271) | [Darya Vladislavovna](https://appshunter.io/developer/1067566962) |

## What reviewers say

### Spaceflight Simulator

[App page](https://appshunter.io/ios/app/spaceflight-simulator/id1308057272)

Build and launch rockets to explore a realistic, open universe. Experience space exploration with accurate physics and a vast, explorable solar system.

**Highlights:** Build custom rockets, Realistic orbital mechanics, Explore a scaled universe, Visit planets and moons, Open-world space exploration, Real-life physics simulation

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skins Expansion | $2.99 | one-time |
| Full Version | $3.99 | one-time |
| Redstone + Atlas Pack | $3.99 | one-time |
| Parts Expansion | $4.99 | one-time |
| Infinite Area Expansion | $4.99 | one-time |
| Expansion Bundle | $7.99 | one-time |
| Cheats Expansion | $9.99 | one-time |
| Full Bundle Upgrade | $9.99 | one-time |
| Full Bundle | $11.99 | one-time |
| Full Bundle | $14.99 | one-time |

**What reviewers like**

- 🚀 Realistic physics and space simulation
- 👍 Intuitive controls and easy to learn
- 🚀 Ability to build complex rockets and spacecraft
- 👍 No ads or in-app purchases required to play

**What reviewers complain about**

- 🐛 Occasional bugs and glitches, especially with large rockets
- 🔋 Potential performance issues on older devices
- 🔒 Limited customization and part options in free version
- 🚀 Docking and rendezvous maneuvers can be very challenging

**Reported bugs**

- Rocket parts sometimes clipping through each other
- Occasional freezing or crashing when launching large rockets
- Issues with RCS thrusters firing unexpectedly during docking
- Problems with maintaining stable orbits and transfers

**Requested features**

- Add more planets, moons, and celestial bodies to explore
- Implement a career mode or progression system with challenges
- Allow for more customization of rocket parts and spacecraft
- Improve docking and rendezvous mechanics to make them more accessible
- Add the ability to control individual astronauts and perform EVAs


### Genius Mechanic

[App page](https://appshunter.io/ios/app/genius-mechanic/id1497678980)

Create anything you can imagine in this mobile sandbox. Build complex vehicles like monorails or tracked all-terrain vehicles without limitations. This developing project welcomes user suggestions.

**Highlights:** Build anything, No restrictions, Monorail construction, Tracked vehicle creation, Open to suggestions

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pay $1 | $0.99 | one-time |
| Pay $3 | $2.99 | one-time |
| Pay $10 | $9.99 | one-time |


## Frequently asked questions

### Is Spaceflight Simulator free?

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

### Is Genius Mechanic free?

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

### Which has better reviews, Spaceflight Simulator or Genius Mechanic?

Spaceflight Simulator is rated higher. Spaceflight Simulator averages 4.8 out of 5 from 97K ratings, while Genius Mechanic averages 3.7 from 148 ratings.

### Do Spaceflight Simulator or Genius Mechanic have ads?

Genius Mechanic shows ads; Spaceflight Simulator does not.

### Which is updated more often, Spaceflight Simulator or Genius Mechanic?

Spaceflight Simulator ships an update every 9 days, and Genius Mechanic every 6 months. Most recently, Spaceflight Simulator was updated on September 26, 2026 and Genius Mechanic on August 4, 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.*