# Engineering HandBook vs Mechanical Dictionary

The clearest difference is in-app purchases: Engineering HandBook at none against Mechanical Dictionary's 5. Engineering HandBook also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 9 months). Mechanical Dictionary's advantage is rating (4.4 vs 4.0). On price, ratings volume and device support there is nothing between them.

Both are free to download. Mechanical Dictionary sells 5 in-app purchases, starting at $1.99 per 7 days. Engineering HandBook asks for nothing beyond the download.

Mechanical Dictionary holds the better App Store score, 4.4 against 4.0. Both are backed by a comparable volume of ratings — 4 and 5 respectively.

Engineering HandBook ships an update every 2 weeks, Mechanical Dictionary every 9 months. The most recent releases landed on October 2, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Engineering HandBook | Mechanical Dictionary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/engineering-handbook/id843746804/reviews) | **[4.4 (5 ratings)](https://appshunter.io/ios/app/mechanical-dictionary-offline/id1480363529/reviews)** |
| Number of ratings | 4 | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 9 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 14 MB |
| Requires iOS | **6.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Raghu Srinivas](https://appshunter.io/developer/843746807) | [Puju Dekivadiya](https://appshunter.io/developer/1289574712) |

## 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


### 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 |


## Frequently asked questions

### Is Engineering HandBook free?

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

### Is Mechanical Dictionary free?

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

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

Mechanical Dictionary is rated higher. Engineering HandBook averages 4.0 out of 5 from 4 ratings, while Mechanical Dictionary averages 4.4 from 5 ratings.

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

Mechanical Dictionary shows ads; Engineering HandBook does not.

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

Engineering HandBook ships an update every 2 weeks, and Mechanical Dictionary every 9 months. Most recently, Engineering HandBook was updated on October 2, 2026 and Mechanical Dictionary on September 16, 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.*