# czi Sky vs EXI Fly X1

czi Sky and EXI Fly X1 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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, EXI Fly X1 fortnightly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | czi Sky | EXI Fly X1 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 32 MB | 9 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Guangzhou Chengzhi Intelligent Machine Technology Co., Ltd.](https://appshunter.io/developer/1675437495) | [Zhongshan Wing Star Innovation Technology Co., Ltd.](https://appshunter.io/developer/1867440122) |

## What reviewers say

### czi Sky

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

**Features:** macOS Compatibility

**In-app purchases:** none


### EXI Fly X1

[App page](https://appshunter.io/ios/app/exi-fly-x1/id6757522892)

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

**In-app purchases:** none


## Frequently asked questions

### Is czi Sky free?

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

### Is EXI Fly X1 free?

EXI Fly X1 is free to download, with no in-app purchases.

### Do czi Sky or EXI Fly X1 have ads?

Neither czi Sky nor EXI Fly X1 shows ads.

### Which is updated more often, czi Sky or EXI Fly X1?

czi Sky ships an update every 3 weeks, and EXI Fly X1 fortnightly. Most recently, czi Sky was updated on October 30, 2026 and EXI Fly X1 on November 5, 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.*