# Mechanical Formula vs QuaLean

The clearest difference is device support: Mechanical Formula at 3 against QuaLean's 1. Mechanical Formula also leads on iOS requirement (13.0 vs 16.4). 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 QuaLean sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Mechanical Formula ships an update every 4 months, QuaLean every 5 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Mechanical Formula | QuaLean |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (34 ratings)](https://appshunter.io/ios/app/mechanical-formula/id1668948373/reviews)** | — |
| Number of ratings | **34** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 42 MB | 85 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) | [TagMango Inc](https://appshunter.io/developer/1611765353) |

## 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 |


### QuaLean

[App page](https://appshunter.io/ios/app/qualean/id6746635737)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Automotive Quality System | $119.99 | one-time |


## Frequently asked questions

### Is Mechanical Formula free?

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

### Is QuaLean free?

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

### Do Mechanical Formula or QuaLean have ads?

Neither Mechanical Formula nor QuaLean shows ads.

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

Mechanical Formula ships an update every 4 months, and QuaLean every 5 months. Most recently, Mechanical Formula was updated on October 24, 2026 and QuaLean on October 28, 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.*