# 星密 vs 1998课堂教师

The clearest difference is iOS requirement: 星密 at 13.0 against 1998课堂教师's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

星密 ships an update every 4 weeks, 1998课堂教师 monthly. The most recent releases landed on September 26, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 星密 | 1998课堂教师 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Monthly |
| Size | 43 MB | 100 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [逸 刘](https://appshunter.io/developer/1483297788) | [南京壹玖玖捌文化传播有限公司](https://appshunter.io/developer/1574142172) |

## What reviewers say

### 星密

[App page](https://appshunter.io/ios/app/id6447797300)

**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 星密 free?

星密 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 星密 or 1998课堂教师 have ads?

Neither 星密 nor 1998课堂教师 shows ads.

### Which is updated more often, 星密 or 1998课堂教师?

星密 ships an update every 4 weeks, and 1998课堂教师 monthly. Most recently, 星密 was updated on September 26, 2026 and 1998课堂教师 on October 2, 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.*