# AP World History Prep Test vs Kero

The clearest difference is device support: AP World History Prep Test at 3 against Kero's 1. AP World History Prep Test also leads on iOS requirement (13.0 vs 16.4). On price, ads and in-app purchases there is nothing between them.

Both are free to download. AP World History Prep Test sells 1 one-off in-app purchase and Kero sells 3 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | AP World History Prep Test | Kero |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Size | 47 MB | 159 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nova Scotia Limited](https://appshunter.io/developer/1757830011) | [Studio Ray Inc.](https://appshunter.io/developer/1812325586) |

## What reviewers say

### AP World History Prep Test

[App page](https://appshunter.io/ios/app/ap-world-history-prep-test/id6753748149)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $9.99 | one-time |


### Kero

[App page](https://appshunter.io/ios/app/kero-ai-study-notes/id6758639872)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kero Pro Weekly | $9.99 | per 7 days |
| Kero Pro Yearly Offer | $79.99 | per year |
| Kero Pro Yearly | $99.99 | per year |


## Frequently asked questions

### Is AP World History Prep Test free?

AP World History Prep Test is free to download, with in-app purchases available.

### Is Kero free?

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

### Do AP World History Prep Test or Kero have ads?

Neither AP World History Prep Test nor Kero 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.*