# 云执照 vs 嗖嗖Fly

The clearest difference is review sentiment: 嗖嗖Fly at 100% against 云执照's 15%. 嗖嗖Fly also leads on rating (5.0 vs 1.3). 云执照's advantage is ads (none vs shown) and ratings volume (82 vs 2). On price, update cadence, 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.

嗖嗖Fly holds the better App Store score, 5.0 against 1.3. That said, the two scores are not equally well evidenced: 云执照 has 82 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 15% of 云执照's written reviews are positive against 100% of 嗖嗖Fly's.

云执照 ships an update every 3 weeks, 嗖嗖Fly fortnightly. The most recent releases landed on September 21, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | 云执照 | 嗖嗖Fly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.3 (82 ratings)](https://appshunter.io/ios/app/id1127299042/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fly/id6708228548/reviews)** |
| Number of ratings | **82** | 2 |
| Positive reviews | 14.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | — | Free |
| Size | 63 MB | 124 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [中国民用航空局信息中心](https://appshunter.io/developer/1112456437) | [北京安擎智飞科技有限公司](https://appshunter.io/developer/1769867334) |

## What reviewers say

### 云执照

[App page](https://appshunter.io/ios/app/id1127299042)

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

**In-app purchases:** none


### 嗖嗖Fly

[App page](https://appshunter.io/ios/app/fly/id6708228548)

This app uses advanced algorithms to scan the sky and identify satellite orbits in real-time. It offers a 3D visualization of constellations and allows users to generate personalized posters of their findings. It's designed for users interested in space technology and celestial observation.

**Highlights:** One-click sky scanning, Real-time satellite orbit tracking, 3D constellation visualization, Personalized 'sky scan' posters, Integration with Beidou/GPS data, Optimized scanning algorithms

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

**In-app purchases:** none


## Frequently asked questions

### Is 云执照 free?

云执照 is free to download, with no in-app purchases.

### Is 嗖嗖Fly free?

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

### Which has better reviews, 云执照 or 嗖嗖Fly?

嗖嗖Fly is rated higher. 云执照 averages 1.3 out of 5 from 82 ratings, while 嗖嗖Fly averages 5.0 from 2 ratings.

### Do 云执照 or 嗖嗖Fly have ads?

嗖嗖Fly shows ads; 云执照 does not.

### Which is updated more often, 云执照 or 嗖嗖Fly?

云执照 ships an update every 3 weeks, and 嗖嗖Fly fortnightly. Most recently, 云执照 was updated on September 21, 2026 and 嗖嗖Fly on September 12, 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.*