# 通关学堂 vs AI错题树

The clearest difference is in-app purchases: 通关学堂 at none against AI错题树's 3. 通关学堂 also leads on iOS requirement (12.0 vs 16.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. AI错题树 sells 3 one-off in-app purchases. 通关学堂 asks for nothing beyond the download.

通关学堂 ships an update fortnightly, AI错题树 weekly. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 通关学堂 | AI错题树 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai/id6771737023/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 30 MB | 49 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [浩 徐](https://appshunter.io/developer/1595273210) | [南京五脉生物科技有限公司](https://appshunter.io/developer/6771737025) |

## What reviewers say

### 通关学堂

[App page](https://appshunter.io/ios/app/id1597403920)

**In-app purchases:** none


### AI错题树

[App page](https://appshunter.io/ios/app/ai/id6771737023)

This app helps students manage and learn from their mistakes. Upload test papers or individual questions via photo for AI-powered analysis, identifying error types and providing correct solutions. Organize your errors by subject and track your learning progress to pinpoint weak areas.

**Highlights:** Photo upload for questions and test papers, AI error diagnosis and solution guidance, Mistake notebook management by subject/grade, Progress tracking and weak area identification, Privacy protection with local AI analysis

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 AI calls | $0.99 | one-time |
| 1000 AI Calls | $4.99 | one-time |
| 5000 AI Calls | $24.99 | one-time |


## Frequently asked questions

### Is 通关学堂 free?

通关学堂 is free to download, with no in-app purchases.

### Is AI错题树 free?

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

### Do 通关学堂 or AI错题树 have ads?

Neither 通关学堂 nor AI错题树 shows ads.

### Which is updated more often, 通关学堂 or AI错题树?

通关学堂 ships an update fortnightly, and AI错题树 weekly. Most recently, 通关学堂 was updated on November 7, 2026 and AI错题树 on November 5, 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.*