# Mechanical Components vs Number Chase Number Catch

The clearest difference is in-app purchases: Number Chase Number Catch at none against Mechanical Components's 4. Number Chase Number Catch also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Mechanical Components sells 4 in-app purchases, starting at $7.99 per 7 days. Number Chase Number Catch asks for nothing beyond the download.

Mechanical Components ships an update every 7 months, Number Chase Number Catch every 5 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Mechanical Components | Number Chase Number Catch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/mechanical-components/id6738186476/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 12 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) | [Lutfu Orcun Selbasan](https://appshunter.io/developer/1827809743) |

## What reviewers say

### Mechanical Components

[App page](https://appshunter.io/ios/app/mechanical-components/id6738186476)

Test your knowledge of mechanical components with interactive quizzes. Features high-quality images, instant feedback, and multiple difficulty levels to help you master engineering parts. Ideal for students, DIY enthusiasts, and professionals.

**Highlights:** Interactive quizzes on mechanical parts, High-quality component images, Instant feedback and facts, Multiple difficulty levels, Learn and master engineering components

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week | $7.99 | per 7 days |
| Month | $19.99 | per month |
| 6 months | $19.99 | per 6 months |
| Year | $29.99 | per year |


### Number Chase Number Catch

[App page](https://appshunter.io/ios/app/number-chase-number-catch/id6748883304)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mechanical Components free?

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

### Is Number Chase Number Catch free?

Number Chase Number Catch is free to download, with no in-app purchases.

### Do Mechanical Components or Number Chase Number Catch have ads?

Neither Mechanical Components nor Number Chase Number Catch shows ads.

### Which is updated more often, Mechanical Components or Number Chase Number Catch?

Mechanical Components ships an update every 7 months, and Number Chase Number Catch every 5 months. Most recently, Mechanical Components was updated on October 24, 2026 and Number Chase Number Catch on October 25, 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.*