# Engineering & FE Prep vs Mechanical Formula

The clearest difference is update cadence: Engineering & FE Prep at every 2 weeks against Mechanical Formula's every 4 months. Engineering & FE Prep also leads on ratings volume (171 vs 34) and iOS requirement (11.0 vs 13.0). Mechanical Formula's advantage is rating (4.7 vs 4.5). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Engineering & FE Prep sells 1 one-off in-app purchase and Mechanical Formula sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Mechanical Formula holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Engineering & FE Prep has 171 ratings behind it against 34, so its average is the more settled of the two.

Engineering & FE Prep ships an update every 2 weeks, Mechanical Formula every 4 months. The most recent releases landed on September 15, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Engineering & FE Prep | Mechanical Formula |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (171 ratings)](https://appshunter.io/ios/app/engineering-and-fe-prep/id1519694401/reviews) | **[4.7 (34 ratings)](https://appshunter.io/ios/app/mechanical-formula/id1668948373/reviews)** |
| Number of ratings | **171** | 34 |
| Positive reviews | 61.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 102 MB | 42 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EnginPeers LLC](https://appshunter.io/developer/1368846655) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## What reviewers say

### Engineering & FE Prep

[App page](https://appshunter.io/ios/app/engineering-and-fe-prep/id1519694401)

Prepare for your Fundamentals of Engineering (FE) exam with this comprehensive study tool. Review key engineering topics, practice with quizzes and exams, and analyze your performance to identify areas for improvement. Tailored for various engineering disciplines, it offers on-the-go learning to help you pass with confidence.

**Highlights:** 10+ Engineering topics reviewed, Practice exams, Test analysis with score and missed questions, Flashcards, Review over 15+ Engineering topics and quizzes

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Content | $4.99 | one-time |


### Mechanical Formula

[App page](https://appshunter.io/ios/app/mechanical-formula/id1668948373)

This app provides over 200 essential mechanical engineering formulas and calculations in a user-friendly tool. It's designed to simplify complex concepts and speed up problem-solving for students, professionals, and educators.

**Highlights:** 200+ mechanical engineering formulas, Instant calculations, Intuitive interface, Real-world application explanations, Exam preparation aid, Lifetime Premium option

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Engineering & FE Prep free?

Engineering & FE Prep is free to download, with in-app purchases available.

### Is Mechanical Formula free?

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

### Which has better reviews, Engineering & FE Prep or Mechanical Formula?

Mechanical Formula is rated higher. Engineering & FE Prep averages 4.5 out of 5 from 171 ratings, while Mechanical Formula averages 4.7 from 34 ratings.

### Do Engineering & FE Prep or Mechanical Formula have ads?

Neither Engineering & FE Prep nor Mechanical Formula shows ads.

### Which is updated more often, Engineering & FE Prep or Mechanical Formula?

Engineering & FE Prep ships an update every 2 weeks, and Mechanical Formula every 4 months. Most recently, Engineering & FE Prep was updated on September 15, 2026 and Mechanical Formula on September 19, 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.*