# Trans4motor S vs Attracteur

The clearest difference is review sentiment: Attracteur at 100% against Trans4motor S's 50%. Attracteur also leads on rating (5.0 vs 4.6) and price ($2.99 vs $5.99). Trans4motor S's advantage is update cadence (weekly vs every 25 months) and ratings volume (19 vs 1). On ads, in-app purchases, monetization model and device support there is nothing between them.

Trans4motor S costs $5.99 and Attracteur $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Attracteur holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Trans4motor S has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Trans4motor S's written reviews are positive against 100% of Attracteur's.

Trans4motor S ships an update weekly, Attracteur every 25 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Trans4motor S | Attracteur |
| --- | --- | --- |
| Price | $5.99 | **$2.99** |
| Rating | [4.6 (19 ratings)](https://appshunter.io/ios/app/trans4motor-s/id1561448237/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/attracteur/id1572189546/reviews)** |
| Number of ratings | **19** | 1 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 25 months |
| Monetization | Paid | Paid |
| Size | 127 MB | 3 MB |
| Requires iOS | **14.1** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kitt Peak, Inc.](https://appshunter.io/developer/399507326) | [Sylvain Lambert](https://appshunter.io/developer/783315608) |

## What reviewers say

### Trans4motor S

[App page](https://appshunter.io/ios/app/trans4motor-s/id1561448237)

Explore the inner workings of various four-stroke aircraft engines through detailed CG animations. Experience realistic engine sounds, throttle control, and interactive modes like cutaway views and engine start-up simulations. Learn about engine mechanics and history.

**Highlights:** Transform between engine types, Realistic engine sound and throttle control, Cutaway view of engine internals, Virtual engine start-up procedure, Interactive movie presentations, Machine gun firing simulation

**Features:** macOS Compatibility

**In-app purchases:** none


### Attracteur

[App page](https://appshunter.io/ios/app/attracteur/id1572189546)

Explore the captivating realm of mathematical attractors. This application reveals the inherent beauty of chaos through interactive visualizations. It's designed for anyone curious about the intricate patterns found in complex systems.

**Highlights:** Mathematical attractor exploration, Chaos theory visualization, Interactive learning, Educational content, Beautiful mathematical patterns

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

**In-app purchases:** none


## Frequently asked questions

### Is Trans4motor S free?

Trans4motor S costs $5.99, with no in-app purchases.

### Is Attracteur free?

Attracteur costs $2.99, with no in-app purchases.

### Which has better reviews, Trans4motor S or Attracteur?

Attracteur is rated higher. Trans4motor S averages 4.6 out of 5 from 19 ratings, while Attracteur averages 5.0 from 1 ratings.

### Do Trans4motor S or Attracteur have ads?

Neither Trans4motor S nor Attracteur shows ads.

### Which is updated more often, Trans4motor S or Attracteur?

Trans4motor S ships an update weekly, and Attracteur every 25 months. Most recently, Trans4motor S was updated on November 3, 2026 and Attracteur on November 3, 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.*