# Mechanical Components vs CarDiagAI

The clearest difference is in-app purchases: CarDiagAI at none against Mechanical Components's 4. CarDiagAI also leads on update cadence (every 3 weeks vs every 7 months) and device support (3 vs 1). On price and ads there is nothing between them.

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

Mechanical Components ships an update every 7 months, CarDiagAI every 3 weeks. The most recent releases landed on October 23, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Mechanical Components | CarDiagAI |
| --- | --- | --- |
| 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 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 77 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) | [Arminas Markevicius](https://appshunter.io/developer/1880649280) |

## 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 |


### CarDiagAI

[App page](https://appshunter.io/ios/app/cardiagai/id6759789791)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mechanical Components free?

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

### Is CarDiagAI free?

CarDiagAI is free to download, with no in-app purchases.

### Do Mechanical Components or CarDiagAI have ads?

Neither Mechanical Components nor CarDiagAI shows ads.

### Which is updated more often, Mechanical Components or CarDiagAI?

Mechanical Components ships an update every 7 months, and CarDiagAI every 3 weeks. Most recently, Mechanical Components was updated on October 23, 2026 and CarDiagAI on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*