# Mechanical Dictionary vs Eng Dynamics

The clearest difference is rating: Eng Dynamics at 5.0 against Mechanical Dictionary's 4.4. Eng Dynamics also leads on in-app purchases (none vs 5) and ads (none vs shown). Mechanical Dictionary's advantage is ratings volume (5 vs 1). On price, review sentiment, update cadence and monetization model there is nothing between them.

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

Eng Dynamics holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Mechanical Dictionary has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Mechanical Dictionary ships an update every 9 months, Eng Dynamics every 8 months. The most recent releases landed on June 6, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | Mechanical Dictionary | Eng Dynamics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (5 ratings)](https://appshunter.io/ios/app/mechanical-dictionary-offline/id1480363529/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/eng-dynamics/id1510250282/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 8 months** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 14 MB | 21 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Puju Dekivadiya](https://appshunter.io/developer/1289574712) | [Kurt Gramoll](https://appshunter.io/developer/782218116) |

## 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 |


### Eng Dynamics

[App page](https://appshunter.io/ios/app/eng-dynamics/id1510250282)

This app offers practice problems and solutions for engineering Dynamics courses, mirroring textbook structures. It links to a free online eBook for theoretical support. A free version provides limited problems, while a paid version unlocks a comprehensive library.

**Highlights:** Real homework and test problems, Organized by textbook sections/chapters, Complete solutions with graphics, Links to online eBook theory, Extensive problem library (Pro version), Problems used in real engineering classes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mechanical Dictionary free?

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

### Is Eng Dynamics free?

Eng Dynamics is free to download, with no in-app purchases.

### Which has better reviews, Mechanical Dictionary or Eng Dynamics?

Eng Dynamics is rated higher. Mechanical Dictionary averages 4.4 out of 5 from 5 ratings, while Eng Dynamics averages 5.0 from 1 ratings.

### Do Mechanical Dictionary or Eng Dynamics have ads?

Mechanical Dictionary shows ads; Eng Dynamics does not.

### Which is updated more often, Mechanical Dictionary or Eng Dynamics?

Mechanical Dictionary ships an update every 9 months, and Eng Dynamics every 8 months. Most recently, Mechanical Dictionary was updated on June 6, 2026 and Eng Dynamics on June 10, 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.*