# Genius Mechanic vs Contraptor

The clearest difference is review sentiment: Contraptor at 100% against Genius Mechanic's 64%. Contraptor also leads on in-app purchases (none vs 3) and ads (none vs shown). Genius Mechanic's advantage is ratings volume (150 vs 4) and iOS requirement (15.0 vs 18.0). On price and device support there is nothing between them.

Both are free to download. Genius Mechanic sells 3 one-off in-app purchases. Contraptor asks for nothing beyond the download.

Contraptor holds the better App Store score, 4.0 against 3.7. That said, the two scores are not equally well evidenced: Genius Mechanic has 150 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 64% of Genius Mechanic's written reviews are positive against 100% of Contraptor's.

Genius Mechanic ships an update every 6 months, Contraptor every 5 days. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Genius Mechanic | Contraptor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (150 ratings)](https://appshunter.io/ios/app/genius-mechanic/id1497678980/reviews) | **[4.0 (4 ratings)](https://appshunter.io/ios/app/contraptor/id6772646468/reviews)** |
| Number of ratings | **150** | 4 |
| Positive reviews | 64.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 5 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 166 MB | 41 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Darya Vladislavovna](https://appshunter.io/developer/1067566962) | [John Coumerilh](https://appshunter.io/developer/1157188388) |

## What reviewers say

### 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 |


### Contraptor

[App page](https://appshunter.io/ios/app/contraptor/id6772646468)

Create intricate machines to solve physics-based puzzles. Design your own challenges, share them with the community, and compete on leaderboards. Learn physics principles through hands-on tutorials.

**Highlights:** Build with real 2D physics, Solve community challenges, Design and share custom puzzles, Climb leaderboards, Hands-on tutorials, Universal app for iPhone and iPad

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

**In-app purchases:** none


## Frequently asked questions

### Is Genius Mechanic free?

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

### Is Contraptor free?

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

### Which has better reviews, Genius Mechanic or Contraptor?

Contraptor is rated higher. Genius Mechanic averages 3.7 out of 5 from 150 ratings, while Contraptor averages 4.0 from 4 ratings.

### Do Genius Mechanic or Contraptor have ads?

Genius Mechanic shows ads; Contraptor does not.

### Which is updated more often, Genius Mechanic or Contraptor?

Genius Mechanic ships an update every 6 months, and Contraptor every 5 days. Most recently, Genius Mechanic was updated on October 23, 2026 and Contraptor on October 22, 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.*