# Mechanical Dictionary vs Mechanical Formula

The clearest difference is review sentiment: Mechanical Dictionary at 100% against Mechanical Formula's 0%. Mechanical Formula's advantage is ads (none vs shown) and rating (4.7 vs 4.4). On price, in-app purchases, monetization model 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 and Mechanical Formula sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Mechanical Formula holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Mechanical Formula has 34 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 100% of Mechanical Dictionary's written reviews are positive against 0% of Mechanical Formula'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 Formula every 4 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Mechanical Dictionary | Mechanical Formula |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (5 ratings)](https://appshunter.io/ios/app/mechanical-dictionary-offline/id1480363529/reviews) | **[4.7 (34 ratings)](https://appshunter.io/ios/app/mechanical-formula/id1668948373/reviews)** |
| Number of ratings | 5 | **34** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 4 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 14 MB | 42 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Puju Dekivadiya](https://appshunter.io/developer/1289574712) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## 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 Formula

[App page](https://appshunter.io/ios/app/mechanical-formula/id1668948373)

This app provides over 200 essential mechanical engineering formulas and calculations in a user-friendly tool. It's designed to simplify complex concepts and speed up problem-solving for students, professionals, and educators.

**Highlights:** 200+ mechanical engineering formulas, Instant calculations, Intuitive interface, Real-world application explanations, Exam preparation aid, Lifetime Premium option

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Mechanical Dictionary free?

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

### Is Mechanical Formula free?

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

### Which has better reviews, Mechanical Dictionary or Mechanical Formula?

Mechanical Formula is rated higher. Mechanical Dictionary averages 4.4 out of 5 from 5 ratings, while Mechanical Formula averages 4.7 from 34 ratings.

### Do Mechanical Dictionary or Mechanical Formula have ads?

Mechanical Dictionary shows ads; Mechanical Formula does not.

### Which is updated more often, Mechanical Dictionary or Mechanical Formula?

Mechanical Dictionary ships an update every 9 months, and Mechanical Formula every 4 months. Most recently, Mechanical Dictionary was updated on October 24, 2026 and Mechanical Formula on October 24, 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.*