# PrepAI vs AI Engineer Quiz

The clearest difference is device support: AI Engineer Quiz at 2 against PrepAI's —. AI Engineer Quiz also leads on iOS requirement (15.1 vs 26.2). On price and in-app purchases there is nothing between them.

Both are free to download. PrepAI sells 3 in-app purchases, starting at $5.99 per month and AI Engineer Quiz sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | PrepAI | AI Engineer Quiz |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | — | Fortnightly |
| Size | 24 MB | 18 MB |
| Requires iOS | 26.2 | **15.1** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rajendra Choudhary](https://appshunter.io/developer/1884909495) | [Kohei Omori](https://appshunter.io/developer/1886931034) |

## What reviewers say

### PrepAI

[App page](https://appshunter.io/ios/app/prepai-aillm-interview-prep/id6760548115)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PrepAI Premium | $5.99 | per month |
| PrepAI Premium | $14.99 | per 3 months |
| PrepAI Premium | $39.99 | per year |


### AI Engineer Quiz

[App page](https://appshunter.io/ios/app/ai-engineer-quiz/id6770689652)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $5.99 | one-time |


## Frequently asked questions

### Is PrepAI free?

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

### Is AI Engineer Quiz free?

AI Engineer Quiz is free to download, with in-app purchases available.

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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.*