# 学习助手 vs Chat with PDF

The clearest difference is update cadence: Chat with PDF at every 4 days against 学习助手's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 学习助手 sells 3 in-app purchases, starting at $4.99 per month and Chat with PDF sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

学习助手 ships an update every 3 weeks, Chat with PDF every 4 days. The most recent releases landed on September 17, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | 学习助手 | Chat with PDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 181 MB | 28 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wu Lingli](https://appshunter.io/developer/1565327162) | [Fuad Hasanli](https://appshunter.io/developer/1856832329) |

## What reviewers say

### 学习助手

[App page](https://appshunter.io/ios/app/ai/id6502680496)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 包月 | $4.99 | per month |
| 包年 | $39.99 | per year |
| 终身VIP | $49.99 | per year |


### Chat with PDF

[App page](https://appshunter.io/ios/app/chat-with-pdf-docmind-ai/id6757693350)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | per month |
| Pro+ Monthly | $9.99 | per month |
| Pro | $35.99 | per year |
| Pro+ Yearly | $71.99 | per year |


## Frequently asked questions

### Is 学习助手 free?

学习助手 is free to download, with in-app purchases available.

### Is Chat with PDF free?

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

### Do 学习助手 or Chat with PDF have ads?

Neither 学习助手 nor Chat with PDF shows ads.

### Which is updated more often, 学习助手 or Chat with PDF?

学习助手 ships an update every 3 weeks, and Chat with PDF every 4 days. Most recently, 学习助手 was updated on September 17, 2026 and Chat with PDF on September 11, 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.*