# xpStudy vs MistakeBook

The clearest difference is in-app purchases: MistakeBook at none against xpStudy's 2. MistakeBook also leads on ads (none vs shown). xpStudy's advantage is update cadence (every 10 days vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. xpStudy sells 2 in-app purchases, starting at $2.99 per month. MistakeBook asks for nothing beyond the download.

xpStudy ships an update every 10 days, MistakeBook monthly. The most recent releases landed on October 16, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | xpStudy | MistakeBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Monthly |
| Size | 61 MB | 36 MB |
| Requires iOS | **16.4** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vinicius de Queiroz Moreira Alves](https://appshunter.io/developer/1879160521) | [志跃 王](https://appshunter.io/developer/6788202252) |

## What reviewers say

### xpStudy

[App page](https://appshunter.io/ios/app/xpstudy-notes-and-flashcards/id6759511031)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium annual | $24.99 | per year |


### MistakeBook

[App page](https://appshunter.io/ios/app/mistakebook-ai-study-notes/id6788320929)

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

**In-app purchases:** none


## Frequently asked questions

### Is xpStudy free?

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

### Is MistakeBook free?

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

### Do xpStudy or MistakeBook have ads?

xpStudy shows ads; MistakeBook does not.

### Which is updated more often, xpStudy or MistakeBook?

xpStudy ships an update every 10 days, and MistakeBook monthly. Most recently, xpStudy was updated on October 16, 2026 and MistakeBook on October 19, 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.*