# Trans4motor vs Car Engine and Suspension

The clearest difference is price: Car Engine and Suspension at Free against Trans4motor's $2.99. Car Engine and Suspension also leads on in-app purchases (none vs 1) and rating (4.1 vs 3.7). Trans4motor's advantage is ads (none vs shown) and update cadence (every 2 months vs every 31 months). On review sentiment, ratings volume and device support there is nothing between them.

Car Engine and Suspension is free to download; Trans4motor costs $2.99 up front. Trans4motor sells 1 one-off in-app purchase. Car Engine and Suspension asks for nothing beyond the download.

Car Engine and Suspension holds the better App Store score, 4.1 against 3.7. Both are backed by a comparable volume of ratings — 70 and 65 respectively. Written reviews point the same way: 57% of Trans4motor's written reviews are positive against 63% of Car Engine and Suspension's.

Trans4motor ships an update every 2 months, Car Engine and Suspension every 31 months. The most recent releases landed on September 26, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Trans4motor | Car Engine and Suspension |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.7 (70 ratings)](https://appshunter.io/ios/app/trans4motor-engine-simulator/id899277186/reviews) | **[4.1 (65 ratings)](https://appshunter.io/ios/app/car-engine-and-suspension/id6471146773/reviews)** |
| Number of ratings | **70** | 65 |
| Positive reviews | 56.6% of reviews | **62.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 31 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 24 MB | 189 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Kitt Peak, Inc.](https://appshunter.io/developer/399507326) | [Renzo Macedo](https://appshunter.io/developer/1403943580) |

## What reviewers say

### Trans4motor

[App page](https://appshunter.io/ios/app/trans4motor-engine-simulator/id899277186)

Explore the mechanics of 4-stroke engines with this interactive simulator. Visualize the transformation of various engine types and understand their internal workings through detailed CG animation. Enhance your knowledge with adjustable settings and realistic engine sound options.

**Highlights:** Multi-cylinder engine transformation, Realistic engine sound (in-app purchase), Accelerator control simulation, Expandable engine library, Custom engine registration and editing, Interactive educational videos

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add Engine Sound | $1.99 | one-time |


### Car Engine and Suspension

[App page](https://appshunter.io/ios/app/car-engine-and-suspension/id6471146773)

Explore detailed animated models of internal combustion engines and car suspension systems. Observe components in action, understand their functions, and experiment with suspension configurations to learn about automotive mechanics.

**Highlights:** Transparent internal combustion engine model, Animated suspension system visualization, Variable suspension system configuration, Slow-motion detail viewing, Component exploration

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

**In-app purchases:** none


## Frequently asked questions

### Is Trans4motor free?

Trans4motor costs $2.99, and also offers in-app purchases.

### Is Car Engine and Suspension free?

Car Engine and Suspension is free to download, with no in-app purchases.

### Which has better reviews, Trans4motor or Car Engine and Suspension?

Car Engine and Suspension is rated higher. Trans4motor averages 3.7 out of 5 from 70 ratings, while Car Engine and Suspension averages 4.1 from 65 ratings.

### Do Trans4motor or Car Engine and Suspension have ads?

Car Engine and Suspension shows ads; Trans4motor does not.

### Which is updated more often, Trans4motor or Car Engine and Suspension?

Trans4motor ships an update every 2 months, and Car Engine and Suspension every 31 months. Most recently, Trans4motor was updated on September 26, 2026 and Car Engine and Suspension on September 10, 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.*