# Mechanical Engineering Book vs Manufacturing Engineer Prep

The clearest difference is price: Manufacturing Engineer Prep at Free against Mechanical Engineering Book's $1.99. Mechanical Engineering Book's advantage is in-app purchases (none vs 9) and iOS requirement (10.0 vs 15.1). On update cadence, ads and device support there is nothing between them.

Manufacturing Engineer Prep is free to download; Mechanical Engineering Book costs $1.99 up front. Manufacturing Engineer Prep sells 9 in-app purchases, starting at $8.99 per 7 days. Mechanical Engineering Book asks for nothing beyond the download.

Mechanical Engineering Book ships an update every 11 months, Manufacturing Engineer Prep every 7 months. The most recent releases landed on September 9, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Mechanical Engineering Book | Manufacturing Engineer Prep |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.7 (12 ratings)](https://appshunter.io/ios/app/mechanical-engineering-book/id6448752936/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 7 months** |
| Monetization | Paid | — |
| Size | 38 MB | 51 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Haroon Khalil](https://appshunter.io/developer/1685448939) | [Exam Prep OU](https://appshunter.io/developer/1689642184) |

## What reviewers say

### Mechanical Engineering Book

[App page](https://appshunter.io/ios/app/mechanical-engineering-book/id6448752936)

This app provides a comprehensive guide to mechanical engineering, covering fundamental concepts, key terms, and essential formulas. It's designed for students and professionals to deepen their understanding of machine mechanisms and engineering principles.

**Highlights:** Learn mechanical engineering principles, Understand machine mechanisms, Access engineering formulas and equations, Explore engineering facts, Covers thermodynamics, materials science, and more, Designed for professionals and students

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

**In-app purchases:** none


### Manufacturing Engineer Prep

[App page](https://appshunter.io/ios/app/manufacturing-engineer-prep/id6744238978)

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CMfgE Weekly Full Access | $8.99 | per 7 days |
| CMfgE Monthly Full Access | $24.99 | per month |
| CMfgE Monthly Full Access | $34.99 | per month |
| CMfgE Quarterly Full Access | $55.99 | per 3 months |
| CMfgE Quarterly Full Access | $59.99 | per 3 months |
| CMfgE Semiannual Full Access | $75.99 | per 6 months |
| CMfgE Semiannual Full Access | $79.99 | per 6 months |
| CMfgE Annual Full Access | $109.99 | per year |
| CMfgE Annual Full Access | $119.99 | per year |


## Frequently asked questions

### Is Mechanical Engineering Book free?

Mechanical Engineering Book costs $1.99, with no in-app purchases.

### Is Manufacturing Engineer Prep free?

Manufacturing Engineer Prep is free to download, with in-app purchases available.

### Do Mechanical Engineering Book or Manufacturing Engineer Prep have ads?

Neither Mechanical Engineering Book nor Manufacturing Engineer Prep shows ads.

### Which is updated more often, Mechanical Engineering Book or Manufacturing Engineer Prep?

Mechanical Engineering Book ships an update every 11 months, and Manufacturing Engineer Prep every 7 months. Most recently, Mechanical Engineering Book was updated on September 9, 2026 and Manufacturing Engineer Prep on September 14, 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.*