# 今知错题本：批量拍照录题，思维导图笔记复习高效整理工具 vs 知我 AI

The clearest difference is in-app purchases: 知我 AI at none against 今知错题本：批量拍照录题，思维导图笔记复习高效整理工具's 9. 知我 AI also leads on iOS requirement (15.0 vs 17.5). 今知错题本：批量拍照录题，思维导图笔记复习高效整理工具's advantage is update cadence (every 4 days vs every 2 weeks). On price, ads and device support there is nothing between them.

Both are free to download. 今知错题本：批量拍照录题，思维导图笔记复习高效整理工具 sells 9 in-app purchases, starting at $0.99 per month. 知我 AI asks for nothing beyond the download.

今知错题本：批量拍照录题，思维导图笔记复习高效整理工具 ships an update every 4 days, 知我 AI every 2 weeks. The most recent releases landed on October 23, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 今知错题本：批量拍照录题，思维导图笔记复习高效整理工具 | 知我 AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Size | 28 MB | 3 MB |
| Requires iOS | 17.5 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [惠桐 董](https://appshunter.io/developer/1822284792) | [杰栋 何](https://appshunter.io/developer/1896629335) |

## What reviewers say

### 今知错题本：批量拍照录题，思维导图笔记复习高效整理工具

[App page](https://appshunter.io/ios/app/id6747738523)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 今知错题本月度Pro会员 | $0.99 | per month |
| 今知错题本季度会员 | $1.99 | per 3 months |
| 今知 Max 月度会员 | $2.99 | per month |
| 今知 Max 季度会员 | $5.99 | per 3 months |
| 今知错题本Pro年度会员 | $6.99 | per year |
| 今知 Max 年度会员 | $19.99 | per year |
| 轻量积分卡 | $0.99 | one-time |
| 进阶积分卡 | $2.99 | one-time |
| 畅用积分卡 | $5.99 | one-time |


### 知我 AI

[App page](https://appshunter.io/ios/app/ai/id6780978880)

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

**In-app purchases:** none


## Frequently asked questions

### Is 今知错题本：批量拍照录题，思维导图笔记复习高效整理工具 free?

今知错题本：批量拍照录题，思维导图笔记复习高效整理工具 is free to download, with in-app purchases available.

### Is 知我 AI free?

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

### Do 今知错题本：批量拍照录题，思维导图笔记复习高效整理工具 or 知我 AI have ads?

Neither 今知错题本：批量拍照录题，思维导图笔记复习高效整理工具 nor 知我 AI shows ads.

### Which is updated more often, 今知错题本：批量拍照录题，思维导图笔记复习高效整理工具 or 知我 AI?

今知错题本：批量拍照录题，思维导图笔记复习高效整理工具 ships an update every 4 days, and 知我 AI every 2 weeks. Most recently, 今知错题本：批量拍照录题，思维导图笔记复习高效整理工具 was updated on October 23, 2026 and 知我 AI on October 8, 2026.

---

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