# 错题本 vs 和易互通

The clearest difference is in-app purchases: 和易互通 at none against 错题本's 2. 和易互通 also leads on update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 错题本 sells 2 in-app purchases, starting at $1.99 per month. 和易互通 asks for nothing beyond the download.

错题本 ships an update every 2 months, 和易互通 every 3 weeks. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 错题本 | 和易互通 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/id6448860597/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Freemium | — |
| Size | 46 MB | 93 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [深圳市美易网科技有限公司](https://appshunter.io/developer/1647736306) | [Yunnan Continuing Education Network Education Information Consulting Co., Ltd.](https://appshunter.io/developer/1700602568) |

## 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 |


### 和易互通

[App page](https://appshunter.io/ios/app/id6670250232)

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

**In-app purchases:** none


## Frequently asked questions

### Is 错题本 free?

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

### Is 和易互通 free?

和易互通 is free to download, with no in-app purchases.

### Do 错题本 or 和易互通 have ads?

Neither 错题本 nor 和易互通 shows ads.

### Which is updated more often, 错题本 or 和易互通?

错题本 ships an update every 2 months, and 和易互通 every 3 weeks. Most recently, 错题本 was updated on October 16, 2026 and 和易互通 on October 17, 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.*