# Quiz in Group vs MistakeBook

The clearest difference is ads: MistakeBook at none against Quiz in Group's shown. Quiz in Group's advantage is update cadence (every 5 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Quiz in Group ships an update every 5 days, MistakeBook every 3 weeks. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Quiz in Group | MistakeBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Size | 31 MB | 183 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Satoshi Yamakawa](https://appshunter.io/developer/1864114622) | [志跃 王](https://appshunter.io/developer/6788202252) |

## What reviewers say

### Quiz in Group

[App page](https://appshunter.io/ios/app/quiz-in-group/id6760246685)

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

**In-app purchases:** none


### MistakeBook

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Quiz in Group free?

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

### Is MistakeBook free?

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

### Do Quiz in Group or MistakeBook have ads?

Quiz in Group shows ads; MistakeBook does not.

### Which is updated more often, Quiz in Group or MistakeBook?

Quiz in Group ships an update every 5 days, and MistakeBook every 3 weeks. Most recently, Quiz in Group was updated on October 19, 2026 and MistakeBook 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.*