# Σ同学你好 vs 1998课堂教师

The clearest difference is iOS requirement: Σ同学你好 at 11.0 against 1998课堂教师's 15.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Σ同学你好 | 1998课堂教师 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Monthly |
| Size | 29 MB | 100 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [传明 李](https://appshunter.io/developer/1286941654) | [Nanjing Yijiujiuba Culture Communication Co., Ltd.](https://appshunter.io/developer/1574142172) |

## What reviewers say

### Σ同学你好

[App page](https://appshunter.io/ios/app/id6473533395)

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

**In-app purchases:** none


### 1998课堂教师

[App page](https://appshunter.io/ios/app/1998/id6476253253)

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

**In-app purchases:** none


## Frequently asked questions

### Is Σ同学你好 free?

Σ同学你好 is free to download, with no in-app purchases.

### Is 1998课堂教师 free?

1998课堂教师 is free to download, with no in-app purchases.

### Do Σ同学你好 or 1998课堂教师 have ads?

Neither Σ同学你好 nor 1998课堂教师 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.*