# Mechanical Dictionary vs Mechanical Engineering Book

The clearest difference is review sentiment: Mechanical Dictionary at 100% against Mechanical Engineering Book's 0%. Mechanical Dictionary also leads on price (Free vs $1.99). Mechanical Engineering Book's advantage is in-app purchases (none vs 5) and ads (none vs shown). On ratings volume, update cadence and device support there is nothing between them.

Mechanical Dictionary is free to download; Mechanical Engineering Book costs $1.99 up front. Mechanical Dictionary sells 5 in-app purchases, starting at $1.99 per 7 days. Mechanical Engineering Book asks for nothing beyond the download.

Mechanical Engineering Book holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 5 and 12 respectively. Written reviews complicate that: 100% of Mechanical Dictionary's written reviews are positive against 0% of Mechanical Engineering Book's, so the app with the better star average is not the one people write more warmly about.

Mechanical Dictionary ships an update every 9 months, Mechanical Engineering Book every 11 months. The most recent releases landed on September 16, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Mechanical Dictionary | Mechanical Engineering Book |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.4 (5 ratings)](https://appshunter.io/ios/app/mechanical-dictionary-offline/id1480363529/reviews) | **[4.7 (12 ratings)](https://appshunter.io/ios/app/mechanical-engineering-book/id6448752936/reviews)** |
| Number of ratings | 5 | **12** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 9 months** | Every 11 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 14 MB | 38 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Puju Dekivadiya](https://appshunter.io/developer/1289574712) | [Haroon Khalil](https://appshunter.io/developer/1685448939) |

## What reviewers say

### Mechanical Dictionary

[App page](https://appshunter.io/ios/app/mechanical-dictionary-offline/id1480363529)

This app provides a comprehensive offline dictionary for mechanical engineering terms. It includes video lessons, tests, and expert coaching to enhance knowledge in the field. Features like search, audio pronunciation, and daily word learning are available.

**Highlights:** Offline access to thousands of terms, Search and bookmark functionality, Audio pronunciation of words, Daily 'Word of the Day' feature, Multiple choice quizzes, Customizable color themes

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro Plan | $1.99 | per 7 days |
| Monthly Pro Plan | $4.99 | per month |
| Yearly Pro Plan | $29.99 | per year |
| Remove Ads | $9.99 | one-time |
| Lifetime Access | $39.99 | one-time |


### 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


## Frequently asked questions

### Is Mechanical Dictionary free?

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

### Is Mechanical Engineering Book free?

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

### Which has better reviews, Mechanical Dictionary or Mechanical Engineering Book?

Mechanical Engineering Book is rated higher. Mechanical Dictionary averages 4.4 out of 5 from 5 ratings, while Mechanical Engineering Book averages 4.7 from 12 ratings.

### Do Mechanical Dictionary or Mechanical Engineering Book have ads?

Mechanical Dictionary shows ads; Mechanical Engineering Book does not.

### Which is updated more often, Mechanical Dictionary or Mechanical Engineering Book?

Mechanical Dictionary ships an update every 9 months, and Mechanical Engineering Book every 11 months. Most recently, Mechanical Dictionary was updated on September 16, 2026 and Mechanical Engineering Book on October 1, 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.*