# Polying vs 嗖嗖Fly

The clearest difference is review sentiment: 嗖嗖Fly at 100% against Polying's 40%. 嗖嗖Fly also leads on rating (5.0 vs 3.2) and iOS requirement (13.0 vs 15.0). Polying's advantage is ads (none vs shown) and device support (4 vs 2). On price, ratings volume, update cadence 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.

嗖嗖Fly holds the better App Store score, 5.0 against 3.2. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews point the same way: 40% of Polying's written reviews are positive against 100% of 嗖嗖Fly's.

Polying ships an update every 2 weeks, 嗖嗖Fly fortnightly. The most recent releases landed on September 9, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Polying | 嗖嗖Fly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (5 ratings)](https://appshunter.io/ios/app/polying/id6471041609/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fly/id6708228548/reviews)** |
| Number of ratings | **5** | 2 |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free | Free |
| Size | 92 MB | 124 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [深圳艾斯特创新科技有限公司](https://appshunter.io/developer/1405370693) | [北京安擎智飞科技有限公司](https://appshunter.io/developer/1769867334) |

## What reviewers say

### Polying

[App page](https://appshunter.io/ios/app/polying/id6471041609)

Connect and control Bluetooth smart devices with your phone. Monitor device status, adjust settings, and receive automatic firmware updates. Seamless interaction with your smart gadgets.

**Highlights:** Bind Bluetooth smart devices, Display device status, Modify device parameters, Automatic firmware upgrades, Interact with devices via phone

**Features:** macOS Compatibility, Apple Watch app, 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 Polying free?

Polying 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, Polying or 嗖嗖Fly?

嗖嗖Fly is rated higher. Polying averages 3.2 out of 5 from 5 ratings, while 嗖嗖Fly averages 5.0 from 2 ratings.

### Do Polying or 嗖嗖Fly have ads?

嗖嗖Fly shows ads; Polying does not.

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

Polying ships an update every 2 weeks, and 嗖嗖Fly fortnightly. Most recently, Polying was updated on September 9, 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.*