# 错题本 vs 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

The clearest difference is update cadence: 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 at every 4 days against 错题本's every 2 months. 错题本's advantage is iOS requirement (13.0 vs 17.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 错题本 sells 2 in-app purchases, starting at $1.99 per month and 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. Whichever you choose, the download price is not the number that matters.

错题本 ships an update every 2 months, 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 every 4 days. The most recent releases landed on October 16, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | 错题本 | 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 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/id6448860597/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Freemium | — |
| Size | 46 MB | 28 MB |
| Requires iOS | **13.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [深圳市美易网科技有限公司](https://appshunter.io/developer/1647736306) | [惠桐 董](https://appshunter.io/developer/1822284792) |

## What reviewers say

### 错题本

[App page](https://appshunter.io/ios/app/id6448860597)

This learning tool helps students and parents efficiently manage incorrect answers from homework and tests. It uses advanced technology to quickly capture, organize, and review mistakes, making studying smarter and more effective.

**Highlights:** Photo capture of incorrect answers, Automatic removal of handwriting, Subject-based categorization, Detailed breakdown of questions and solutions, Custom practice test generation, Daily review for targeted learning

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月 | $1.99 | per month |
| 连续包年 | $9.99 | per year |


### 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 |


## Frequently asked questions

### Is 错题本 free?

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

### 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.

### Do 错题本 or 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 have ads?

Neither 错题本 nor 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 shows ads.

### Which is updated more often, 错题本 or 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?

错题本 ships an update every 2 months, and 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 every 4 days. Most recently, 错题本 was updated on October 16, 2026 and 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 on October 23, 2026.

---

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