# 讀書小幫手 vs 課咖ClassKey

The clearest difference is in-app purchases: 讀書小幫手 at none against 課咖ClassKey's 2. 讀書小幫手 also leads on ads (none vs shown) and update cadence (daily vs every 2 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 課咖ClassKey sells 2 in-app purchases, starting at $3.99 per month. 讀書小幫手 asks for nothing beyond the download.

讀書小幫手 ships an update daily, 課咖ClassKey every 2 weeks. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 讀書小幫手 | 課咖ClassKey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 2 weeks |
| Size | 37 MB | 151 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lichuan Cheng](https://appshunter.io/developer/1811966129) | [JHUANG HONG JHIH](https://appshunter.io/developer/1874888024) |

## What reviewers say

### 讀書小幫手

[App page](https://appshunter.io/ios/app/id6746719832)

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

**In-app purchases:** none


### 課咖ClassKey

[App page](https://appshunter.io/ios/app/classkey/id6759839766)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ClassKey Pro 月方案 | $3.99 | per month |
| ClassKey Pro 學期方案 | $14.99 | per 6 months |


## Frequently asked questions

### Is 讀書小幫手 free?

讀書小幫手 is free to download, with no in-app purchases.

### Is 課咖ClassKey free?

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

### Do 讀書小幫手 or 課咖ClassKey have ads?

課咖ClassKey shows ads; 讀書小幫手 does not.

### Which is updated more often, 讀書小幫手 or 課咖ClassKey?

讀書小幫手 ships an update daily, and 課咖ClassKey every 2 weeks. Most recently, 讀書小幫手 was updated on October 9, 2026 and 課咖ClassKey on October 6, 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.*