# Engineering HandBook vs Engineering & FE Prep

The clearest difference is in-app purchases: Engineering HandBook at none against Engineering & FE Prep's 1. Engineering HandBook also leads on iOS requirement (6.0 vs 11.0). Engineering & FE Prep's advantage is rating (4.5 vs 4.0) and ratings volume (171 vs 4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Engineering & FE Prep sells 1 one-off in-app purchase. Engineering HandBook asks for nothing beyond the download.

Engineering & FE Prep holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Engineering & FE Prep has 171 ratings behind it against 4, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on June 8, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Engineering HandBook | Engineering & FE Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/engineering-handbook/id843746804/reviews) | **[4.5 (171 ratings)](https://appshunter.io/ios/app/engineering-and-fe-prep/id1519694401/reviews)** |
| Number of ratings | 4 | **171** |
| Positive reviews | — | 61.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 102 MB |
| Requires iOS | **6.0** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Raghu Srinivas](https://appshunter.io/developer/843746807) | [EnginPeers LLC](https://appshunter.io/developer/1368846655) |

## What reviewers say

### Engineering HandBook

[App page](https://appshunter.io/ios/app/engineering-handbook/id843746804)

Access essential engineering formulas and concepts on the go. This app covers materials, numbers, mechanics, components, and metal cutting operations, providing accurate calculations for various engineering tasks.

**Highlights:** Engineering formulas and calculations, Materials classification and properties, Basic and trigonometric calculations, Unit conversions, Gear drive formulas, Metal cutting operation calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Engineering HandBook free?

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

### Is Engineering & FE Prep free?

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

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

Engineering & FE Prep is rated higher. Engineering HandBook averages 4.0 out of 5 from 4 ratings, while Engineering & FE Prep averages 4.5 from 171 ratings.

### Do Engineering HandBook or Engineering & FE Prep have ads?

Neither Engineering HandBook nor Engineering & FE Prep shows ads.

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

Engineering HandBook ships an update every 2 weeks, and Engineering & FE Prep every 2 weeks. Most recently, Engineering HandBook was updated on June 8, 2026 and Engineering & FE Prep on September 25, 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.*