# czi Sky vs NRL互联

The clearest difference is update cadence: czi Sky at every 3 weeks against NRL互联's every 2 months. NRL互联's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

czi Sky ships an update every 3 weeks, NRL互联 every 2 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | czi Sky | NRL互联 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 32 MB | 6 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Chengzhi Intelligent Machine Technology Co., Ltd.](https://appshunter.io/developer/1675437495) | [程 曹](https://appshunter.io/developer/581814726) |

## What reviewers say

### czi Sky

[App page](https://appshunter.io/ios/app/czi-sky/id6746466110)

**Features:** macOS Compatibility

**In-app purchases:** none


### NRL互联

[App page](https://appshunter.io/ios/app/nrl/id6758810758)

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is czi Sky free?

czi Sky is free to download, with no in-app purchases.

### Is NRL互联 free?

NRL互联 is free to download, with no in-app purchases.

### Do czi Sky or NRL互联 have ads?

Neither czi Sky nor NRL互联 shows ads.

### Which is updated more often, czi Sky or NRL互联?

czi Sky ships an update every 3 weeks, and NRL互联 every 2 months. Most recently, czi Sky was updated on October 30, 2026 and NRL互联 on October 28, 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.*