# Latch vs 嗖嗖Fly

The clearest difference is price: 嗖嗖Fly at Free against Latch's $0.99. 嗖嗖Fly also leads on iOS requirement (13.0 vs 16.0). Latch's advantage is ads (none vs shown) and update cadence (every 6 days vs fortnightly). On in-app purchases and device support there is nothing between them.

嗖嗖Fly is free to download; Latch costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Latch ships an update every 6 days, 嗖嗖Fly fortnightly. The most recent releases landed on October 11, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Latch | 嗖嗖Fly |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fly/id6708228548/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Fortnightly |
| Monetization | — | Free |
| Size | 3 MB | 124 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [有伟 董](https://appshunter.io/developer/1679483114) | [北京安擎智飞科技有限公司](https://appshunter.io/developer/1769867334) |

## What reviewers say

### Latch

[App page](https://appshunter.io/ios/app/latch/id6452399901)

**Features:** macOS Compatibility

**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 Latch free?

Latch costs $0.99, with no in-app purchases.

### Is 嗖嗖Fly free?

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

### Do Latch or 嗖嗖Fly have ads?

嗖嗖Fly shows ads; Latch does not.

### Which is updated more often, Latch or 嗖嗖Fly?

Latch ships an update every 6 days, and 嗖嗖Fly fortnightly. Most recently, Latch was updated on October 11, 2026 and 嗖嗖Fly on September 30, 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.*