# 即未家长端 vs 晶体光学实验室

The clearest difference is update cadence: 晶体光学实验室 at every 2 days against 即未家长端's every 4 months. 即未家长端's advantage is iOS requirement (12.0 vs 26.0). 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.

即未家长端 ships an update every 4 months, 晶体光学实验室 every 2 days. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 即未家长端 | 晶体光学实验室 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 54 MB | 6 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [北京质心教育科技有限公司](https://appshunter.io/developer/1129109586) | [苏州苏哇科技有限公司](https://appshunter.io/developer/6815154716) |

## What reviewers say

### 即未家长端

[App page](https://appshunter.io/ios/app/id6746403764)

**Features:** macOS Compatibility

**In-app purchases:** none


### 晶体光学实验室

[App page](https://appshunter.io/ios/app/id6818200830)

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

**In-app purchases:** none


## Frequently asked questions

### Is 即未家长端 free?

即未家长端 is free to download, with no in-app purchases.

### Is 晶体光学实验室 free?

晶体光学实验室 is free to download, with no in-app purchases.

### Do 即未家长端 or 晶体光学实验室 have ads?

Neither 即未家长端 nor 晶体光学实验室 shows ads.

### Which is updated more often, 即未家长端 or 晶体光学实验室?

即未家长端 ships an update every 4 months, and 晶体光学实验室 every 2 days. Most recently, 即未家长端 was updated on November 8, 2026 and 晶体光学实验室 on November 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.*