# 99课堂 vs izis go

The clearest difference is in-app purchases: izis go at none against 99课堂's 4. 99课堂's advantage is iOS requirement (9.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. 99课堂 sells 4 one-off in-app purchases. izis go asks for nothing beyond the download.

## The numbers

| Metric | 99课堂 | izis go |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 233 MB | 99 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [北京环球兴学科技发展有限公司](https://appshunter.io/developer/656528480) | [湖南隐智科技有限公司](https://appshunter.io/developer/1188203955) |

## What reviewers say

### 99课堂

[App page](https://appshunter.io/ios/app/99/id1545302684)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 35学点 | $7.99 | one-time |
| 75.6学点 | $15.99 | one-time |
| 222.6学点 | $48.99 | one-time |
| 362.6学点 | $79.99 | one-time |


### izis go

[App page](https://appshunter.io/ios/app/izis-go/id1549167650)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 99课堂 free?

99课堂 is free to download, with in-app purchases available.

### Is izis go free?

izis go is free to download, with no in-app purchases.

### Do 99课堂 or izis go have ads?

Neither 99课堂 nor izis go shows ads.

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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.*