# PrepFE vs Eng Mechanics

The clearest difference is review sentiment: Eng Mechanics at 75% against PrepFE's 17%. Eng Mechanics also leads on rating (4.7 vs 2.0) and in-app purchases (none vs 9). PrepFE's advantage is update cadence (every 2 months vs every 12 months) and ratings volume (57 vs 3). On price, ads, monetization model and device support there is nothing between them.

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

Eng Mechanics holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: PrepFE has 57 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 17% of PrepFE's written reviews are positive against 75% of Eng Mechanics's.

PrepFE ships an update every 2 months, Eng Mechanics every 12 months. The most recent releases landed on August 30, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | PrepFE | Eng Mechanics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (57 ratings)](https://appshunter.io/ios/app/prepfe-fe-mechanical-prep/id1455746709/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/eng-mechanics/id1526030024/reviews)** |
| Number of ratings | **57** | 3 |
| Positive reviews | 16.7% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 288 MB | 21 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PrepFE, Inc.](https://appshunter.io/developer/1499557437) | [Kurt Gramoll](https://appshunter.io/developer/782218116) |

## What reviewers say

### 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 |


### Eng Mechanics

[App page](https://appshunter.io/ios/app/eng-mechanics/id1526030024)

This app offers a comprehensive collection of mechanics of materials problems and solutions, mirroring common textbook structures. It provides detailed explanations with graphics and links to an online eBook for further study. Access to all problems requires a paid upgrade.

**Highlights:** Mechanics of Materials problems, Complete solutions with graphics, Organized by textbook sections, Links to online eBook, Real engineering class problems, Updated error corrections

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PrepFE free?

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

### Is Eng Mechanics free?

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

### Which has better reviews, PrepFE or Eng Mechanics?

Eng Mechanics is rated higher. PrepFE averages 2.0 out of 5 from 57 ratings, while Eng Mechanics averages 4.7 from 3 ratings.

### Do PrepFE or Eng Mechanics have ads?

Neither PrepFE nor Eng Mechanics shows ads.

### Which is updated more often, PrepFE or Eng Mechanics?

PrepFE ships an update every 2 months, and Eng Mechanics every 12 months. Most recently, PrepFE was updated on August 30, 2026 and Eng Mechanics on September 9, 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.*