# 专升本词汇通 vs AI错题树

The clearest difference is in-app purchases: 专升本词汇通 at none against AI错题树's 3. 专升本词汇通 also leads on iOS requirement (8.0 vs 16.4). AI错题树's advantage is update cadence (weekly vs every 2 months). On price, 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. 专升本词汇通 asks for nothing beyond the download.

专升本词汇通 ships an update every 2 months, AI错题树 weekly. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 专升本词汇通 | 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 | Every 2 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 44 MB | 48 MB |
| Requires iOS | **8.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [河南中冠网络科技有限公司](https://appshunter.io/developer/960504595) | [南京五脉生物科技有限公司](https://appshunter.io/developer/6771737025) |

## What reviewers say

### 专升本词汇通

[App page](https://appshunter.io/ios/app/id972497543)

**In-app purchases:** none


### AI错题树

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

Effortlessly capture and analyze your mistakes from tests and homework using AI. Organize errors by subject and type, receive correct problem-solving approaches, and track your learning progress to identify weak areas.

**Highlights:** Photo upload for questions and test papers, AI error diagnosis and correction guidance, Organize mistakes by subject and error type, Track learning progress and identify weak areas, 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 专升本词汇通 free?

专升本词汇通 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 专升本词汇通 or AI错题树 have ads?

Neither 专升本词汇通 nor AI错题树 shows ads.

### Which is updated more often, 专升本词汇通 or AI错题树?

专升本词汇通 ships an update every 2 months, and AI错题树 weekly. Most recently, 专升本词汇通 was updated on October 7, 2026 and AI错题树 on October 24, 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.*