# MotionGen vs PrepFE

The clearest difference is rating: MotionGen at 3.4 against PrepFE's 2.0. MotionGen also leads on in-app purchases (none vs 9) and review sentiment (50% vs 17%). PrepFE's advantage is ratings volume (57 vs 15). On price, ads and device support there is nothing between them.

Both are free to download. PrepFE sells 6 one-off in-app purchases. MotionGen asks for nothing beyond the download.

MotionGen holds the better App Store score, 3.4 against 2.0. Both are backed by a comparable volume of ratings — 15 and 57 respectively. Written reviews point the same way: 50% of MotionGen's written reviews are positive against 17% of PrepFE's.

## The numbers

| Metric | MotionGen | PrepFE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (15 ratings)](https://appshunter.io/ios/app/motiongen/id1065657088/reviews)** | [2.0 (57 ratings)](https://appshunter.io/ios/app/prepfe-fe-mechanical-prep/id1455746709/reviews) |
| Number of ratings | 15 | **57** |
| Positive reviews | **50.0% of reviews** | 16.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 288 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mechanismic Inc.](https://appshunter.io/developer/1065657087) | [PrepFE, Inc.](https://appshunter.io/developer/1499557437) |

## 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


### PrepFE

[App page](https://appshunter.io/ios/app/prepfe-fe-mechanical-prep/id1455746709)

Prepare for the FE Mechanical exam with practice problems and flashcards. Learn by doing with expert-curated content, track your progress, and identify areas for improvement. Study conveniently on your mobile device, anytime, anywhere.

**Highlights:** Practice FE exam questions, Interactive practice exams, Hundreds of practice questions, Detailed step-by-step explanations, Reinforce learning with flashcards, Breakdown of strengths and weaknesses

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Access Renewal | $47.99 | one-time |
| 1 Month Access | $59.99 | one-time |
| 3 Months Access Renewal | $61.99 | one-time |
| 6 Months Access Renewal | $75.99 | one-time |
| 3 Months Access | $79.99 | one-time |
| 6 Months Access | $99.99 | one-time |


## Frequently asked questions

### Is MotionGen free?

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

### Is PrepFE free?

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

### Which has better reviews, MotionGen or PrepFE?

MotionGen is rated higher. MotionGen averages 3.4 out of 5 from 15 ratings, while PrepFE averages 2.0 from 57 ratings.

### Do MotionGen or PrepFE have ads?

Neither MotionGen nor PrepFE 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.*