# 2 Stroke Petrol vs Engine Lab

The clearest difference is rating: Engine Lab at 4.0 against 2 Stroke Petrol's 1.0. 2 Stroke Petrol's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 18.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Engine Lab sells 1 one-off in-app purchase. 2 Stroke Petrol asks for nothing beyond the download.

Engine Lab holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

## The numbers

| Metric | 2 Stroke Petrol | Engine Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/2-stroke-petrol/id6472241848/reviews) | **[4.0 (2 ratings)](https://appshunter.io/ios/app/engine-lab-simulator-and-sound/id6790748979/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 9 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 205 MB | 16 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Steven McKee](https://appshunter.io/developer/1637204125) | [Jan Sokol](https://appshunter.io/developer/1896490456) |

## What reviewers say

### 2 Stroke Petrol

[App page](https://appshunter.io/ios/app/2-stroke-petrol/id6472241848)

Explore the 2-stroke petrol engine cycle through interactive 3D animations and simulations in augmented reality. This educational app visually breaks down engine components and the combustion process, making complex mechanics accessible.

**Highlights:** Augmented reality exploration, Interactive 3D animations, Simulations of engine cycle, Component visualization, Multiple viewing angles

**Features:** macOS Compatibility

**In-app purchases:** none


### Engine Lab

[App page](https://appshunter.io/ios/app/engine-lab-simulator-and-sound/id6790748979)

Explore engine mechanics with a touch-first simulator. Build, tune, and test custom engines, observing animations and hearing synthesized exhaust sounds. Export your creations as WAV files.

**Highlights:** Touch-first engine simulation, Build and save custom engines, Tune engine parameters, Simulated dyno pulls, Crank and piston animation, Native exhaust synthesis, Export WAV audio

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Engine Lab Pro | $4.99 | one-time |


## Frequently asked questions

### Is 2 Stroke Petrol free?

2 Stroke Petrol is free to download, with no in-app purchases.

### Is Engine Lab free?

Engine Lab is free to download, with in-app purchases available.

### Which has better reviews, 2 Stroke Petrol or Engine Lab?

Engine Lab is rated higher. 2 Stroke Petrol averages 1.0 out of 5 from 1 ratings, while Engine Lab averages 4.0 from 2 ratings.

### Do 2 Stroke Petrol or Engine Lab have ads?

Neither 2 Stroke Petrol nor Engine Lab shows ads.

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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.*