# MotionGen vs Airfoil Design

The clearest difference is rating: Airfoil Design at 3.9 against MotionGen's 3.3. Airfoil Design also leads on review sentiment (63% vs 50%). MotionGen's advantage is iOS requirement (7.0 vs 16.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Airfoil Design holds the better App Store score, 3.9 against 3.3. Both are backed by a comparable volume of ratings — 16 and 17 respectively. Written reviews point the same way: 50% of MotionGen's written reviews are positive against 63% of Airfoil Design's.

## The numbers

| Metric | MotionGen | Airfoil Design |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (16 ratings)](https://appshunter.io/ios/app/motiongen/id1065657088/reviews) | **[3.9 (17 ratings)](https://appshunter.io/ios/app/airfoil-design/id6444901600/reviews)** |
| Number of ratings | 16 | **17** |
| Positive reviews | 50.0% of reviews | **62.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 10 days |
| Monetization | Free | Free |
| Size | 9 MB | 122 MB |
| Requires iOS | **7.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mechanismic Inc.](https://appshunter.io/developer/1065657087) | [Charles Bilodeau-Berube](https://appshunter.io/developer/1657784873) |

## What reviewers say

### MotionGen

[App page](https://appshunter.io/ios/app/motiongen/id1065657088)

This app synthesizes and simulates planar four-bar linkages, solving motion generation problems for multiple positions. It allows users to design and simulate single degree of freedom linkages for robots and machines, incorporating various pivot and line constraints.

**Highlights:** Synthesizes planar four-bar linkages, Simulates linkage motion, Solves N-position motion generation problems, Incorporates pivot and line constraints, Designs single degree of freedom linkages

**Features:** macOS Compatibility

**In-app purchases:** none


### Airfoil Design

[App page](https://appshunter.io/ios/app/airfoil-design/id6444901600)

This application allows users to design and analyze aircraft wing sections using advanced numeric methods and CFD simulations. It offers tools for creating custom airfoil geometries, real-time aerodynamic analysis, and importing existing designs.

**Highlights:** NACA airfoil generation, Real-time aerodynamic analysis, Airfoil import from database, Custom mesh generation, CFD simulation engine, Streamlines and CP vector visualization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MotionGen free?

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

### Is Airfoil Design free?

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

### Which has better reviews, MotionGen or Airfoil Design?

Airfoil Design is rated higher. MotionGen averages 3.3 out of 5 from 16 ratings, while Airfoil Design averages 3.9 from 17 ratings.

### Do MotionGen or Airfoil Design have ads?

Neither MotionGen nor Airfoil Design 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.*