# Voyager 4G vs czi Sky

The clearest difference is iOS requirement: Voyager 4G at 9.3 against czi Sky's 16.0. On price 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.

## The numbers

| Metric | Voyager 4G | czi Sky |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 3 weeks |
| Size | 80 MB | 32 MB |
| Requires iOS | **9.3** | 16.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [广州市华科尔科技股份有限公司](https://appshunter.io/developer/1681981252) | [Guangzhou Chengzhi Intelligent Machine Technology Co., Ltd.](https://appshunter.io/developer/1675437495) |

## What reviewers say

### Voyager 4G

[App page](https://appshunter.io/ios/app/voyager-4g/id6449414282)

**In-app purchases:** none


### czi Sky

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Voyager 4G free?

Voyager 4G is free to download, with no in-app purchases.

### Is czi Sky free?

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

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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.*