# 环境空气检测 vs Led Flow

The clearest difference is update cadence: Led Flow at monthly against 环境空气检测's every 36 months. 环境空气检测's advantage is iOS requirement (11.0 vs 15.0). On price, ads, 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.

环境空气检测 ships an update every 36 months, Led Flow monthly. The most recent releases landed on October 19, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 环境空气检测 | Led Flow |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Monthly** |
| Size | 36 MB | 25 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [莱靡电子科技(上海)有限公司](https://appshunter.io/developer/1445666432) | [添 程](https://appshunter.io/developer/1748936369) |

## What reviewers say

### 环境空气检测

[App page](https://appshunter.io/ios/app/id1445666433)

**Features:** macOS Compatibility

**In-app purchases:** none


### Led Flow

[App page](https://appshunter.io/ios/app/led-flow/id6503416744)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 环境空气检测 free?

环境空气检测 is free to download, with no in-app purchases.

### Is Led Flow free?

Led Flow is free to download, with no in-app purchases.

### Do 环境空气检测 or Led Flow have ads?

Neither 环境空气检测 nor Led Flow shows ads.

### Which is updated more often, 环境空气检测 or Led Flow?

环境空气检测 ships an update every 36 months, and Led Flow monthly. Most recently, 环境空气检测 was updated on October 19, 2026 and Led Flow on October 17, 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.*