# Mechanical Formula vs Basic Engineering Dictionary

The clearest difference is rating: Mechanical Formula at 4.7 against Basic Engineering Dictionary's 4.0. Mechanical Formula also leads on ratings volume (34 vs 6) and iOS requirement (13.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Mechanical Formula sells 1 one-off in-app purchase and Basic Engineering Dictionary 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 4.0. That said, the two scores are not equally well evidenced: Mechanical Formula has 34 ratings behind it against 6, so its average is the more settled of the two.

Mechanical Formula ships an update every 4 months, Basic Engineering Dictionary every 3 months. The most recent releases landed on September 19, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Mechanical Formula | Basic Engineering Dictionary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (34 ratings)](https://appshunter.io/ios/app/mechanical-formula/id1668948373/reviews)** | [4.0 (6 ratings)](https://appshunter.io/ios/app/basic-engineering-dictionary/id6746554325/reviews) |
| Number of ratings | **34** | 6 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 42 MB | 88 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## What reviewers say

### 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 |


### Basic Engineering Dictionary

[App page](https://appshunter.io/ios/app/basic-engineering-dictionary/id6746554325)

Master engineering concepts with a comprehensive dictionary of over 11,000 terms, key equations, and formulas. Features interactive quizzes, a visual quick guide, and hands-free learning with autoplay mode. Ideal for students and professionals seeking to solidify their engineering knowledge.

**Highlights:** 11,000+ engineering terms, Key equations and formulas, Visual Quick Guide, Interactive quizzes, Autoplay mode for hands-free learning, User contributions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Purchase | $3.99 | one-time |


## Frequently asked questions

### Is Mechanical Formula free?

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

### Is Basic Engineering Dictionary free?

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

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

Mechanical Formula is rated higher. Mechanical Formula averages 4.7 out of 5 from 34 ratings, while Basic Engineering Dictionary averages 4.0 from 6 ratings.

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

Neither Mechanical Formula nor Basic Engineering Dictionary shows ads.

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

Mechanical Formula ships an update every 4 months, and Basic Engineering Dictionary every 3 months. Most recently, Mechanical Formula was updated on September 19, 2026 and Basic Engineering Dictionary on September 8, 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.*