# Wind Tunnel Free vs Engine Lab

The clearest difference is in-app purchases: Wind Tunnel Free at none against Engine Lab's 1. Wind Tunnel Free also leads on review sentiment (82% vs 50%) and ratings volume (53 vs 12). On price, rating and device support there is nothing between them.

Both are free to download. Engine Lab sells 1 one-off in-app purchase. Wind Tunnel Free asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Wind Tunnel Free against 4.7 for Engine Lab. Both are backed by a comparable volume of ratings — 53 and 12 respectively. Written reviews are what separate them: 82% of Wind Tunnel Free's written reviews are positive against 50% of Engine Lab's.

## The numbers

| Metric | Wind Tunnel Free | Engine Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (53 ratings)](https://appshunter.io/ios/app/wind-tunnel-free/id381971296/reviews)** | [4.7 (12 ratings)](https://appshunter.io/ios/app/engine-lab-simulator-and-sound/id6790748979/reviews) |
| Number of ratings | **53** | 12 |
| Positive reviews | **82.2% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 9 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 16 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Algorizk](https://appshunter.io/developer/381971299) | [Jan Sokol](https://appshunter.io/developer/1896490456) |

## What reviewers say

### Wind Tunnel Free

[App page](https://appshunter.io/ios/app/wind-tunnel-free/id381971296)

Simulate fluid dynamics on your mobile device. Draw obstacles and observe how fluids flow around them. Experiment with various shapes, sizes, and visualization modes to understand aerodynamic principles.

**Highlights:** Draw obstacles, Fluid flow simulation, Multiple visualization modes, Adjustable wind speed, Interactive touch actions, Preset models

**In-app purchases:** none


### Engine Lab

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

Design and simulate car engines, from single cylinders to V12s, and hear them run. Explore 3D models, test performance on a dyno, and even drive them with a simulated gearbox. Share your creations and compare them with others.

**Highlights:** Build custom engines, Hear engines idle and rev, 3D engine visualization, Simulated dyno testing, Manual/automatic gearbox simulation, Import and share engine builds

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is Wind Tunnel Free free?

Wind Tunnel Free 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, Wind Tunnel Free or Engine Lab?

Wind Tunnel Free is rated higher. Wind Tunnel Free averages 4.7 out of 5 from 53 ratings, while Engine Lab averages 4.7 from 12 ratings.

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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.*