# Mechanical Formulas Quiz vs Trigonometry Practice

The clearest difference is price: Mechanical Formulas Quiz at Free against Trigonometry Practice's $0.49. Trigonometry Practice's advantage is in-app purchases (none vs 3) and device support (3 vs 1). On ads there is nothing between them.

Mechanical Formulas Quiz is free to download; Trigonometry Practice costs $0.49 up front. Mechanical Formulas Quiz sells 3 in-app purchases, starting at $7.99 per 7 days. Trigonometry Practice asks for nothing beyond the download.

## The numbers

| Metric | Mechanical Formulas Quiz | Trigonometry Practice |
| --- | --- | --- |
| Price | **Free** | $0.49 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 9 days |
| Size | 10 MB | 20 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) | [Manish Kumar](https://appshunter.io/developer/1854995154) |

## What reviewers say

### Mechanical Formulas Quiz

[App page](https://appshunter.io/ios/app/mechanical-formulas-quiz/id6754837392)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week | $7.99 | per 7 days |
| Month | $19.99 | per month |
| Year | $29.99 | per year |


### Trigonometry Practice

[App page](https://appshunter.io/ios/app/trigonometry-practice/id6755685152)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mechanical Formulas Quiz free?

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

### Is Trigonometry Practice free?

Trigonometry Practice costs $0.49, with no in-app purchases.

### Do Mechanical Formulas Quiz or Trigonometry Practice have ads?

Neither Mechanical Formulas Quiz nor Trigonometry Practice shows ads.

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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.*