# 布抄 vs 外研剑桥Join In

The clearest difference is in-app purchases: 外研剑桥Join In at none against 布抄's 12. 外研剑桥Join In also leads on iOS requirement (11.0 vs 13.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 布抄 sells 9 in-app purchases, starting at $19.99 per year. 外研剑桥Join In asks for nothing beyond the download.

布抄 ships an update monthly, 外研剑桥Join In every 2 months. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 布抄 | 外研剑桥Join In |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ai-and/id1662750988/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Subscription | — |
| Size | 46 MB | 38 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chongqing Cuyi Technology Co., Ltd](https://appshunter.io/developer/1657063984) | [凡 吕](https://appshunter.io/developer/1660488640) |

## What reviewers say

### 布抄

[App page](https://appshunter.io/ios/app/ai-and/id1662750988)

This app helps students and parents organize and review academic mistakes. It allows for easy capture of incorrect answers, creation of custom study materials, and even the removal of handwriting from test papers to create blank practice sheets. Export and share your study materials for collaborative learning.

**Highlights:** AI-powered error collection, Handwriting removal from test papers, Customizable error notebooks, Generate practice tests from errors, Export notes and tests (PDF, Word, Image), Share study materials with friends

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 年会员 | $19.99 | per year |
| 1月会员 | $3.99 | one-time |
| 1季度会员 | $7.99 | one-time |
| 1年会员 | $12.99 | one-time |
| 1年会员 | $14.99 | one-time |
| 新人专享一年送半年会员 | $14.99 | one-time |
| 6年会员 | $24.99 | one-time |
| 半年会员 | $24.99 | one-time |
| 永久会员 | $29.99 | one-time |


### 外研剑桥Join In

[App page](https://appshunter.io/ios/app/join-in/id1668536502)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 布抄 free?

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

### Is 外研剑桥Join In free?

外研剑桥Join In is free to download, with no in-app purchases.

### Do 布抄 or 外研剑桥Join In have ads?

Neither 布抄 nor 外研剑桥Join In shows ads.

### Which is updated more often, 布抄 or 外研剑桥Join In?

布抄 ships an update monthly, and 外研剑桥Join In every 2 months. Most recently, 布抄 was updated on October 3, 2026 and 外研剑桥Join In on October 7, 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.*