# 纳风 vs Hi Rheem

The clearest difference is update cadence: Hi Rheem at every 12 months against 纳风's every 28 months. 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.

纳风 ships an update every 28 months, Hi Rheem every 12 months. Both last shipped on November 7, 2026.

## The numbers

| Metric | 纳风 | Hi Rheem |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 12 months** |
| Size | 80 MB | 181 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zhejiang Naflow Purification Technology Co.,Ltd](https://appshunter.io/developer/1516408175) | [Rheem  China Water Heater Co., Ltd](https://appshunter.io/developer/1558088898) |

## What reviewers say

### 纳风

[App page](https://appshunter.io/ios/app/air/id1516408356)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hi Rheem

[App page](https://appshunter.io/ios/app/hi-rheem/id1558088896)

**In-app purchases:** none


## Frequently asked questions

### Is 纳风 free?

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

### Is Hi Rheem free?

Hi Rheem is free to download, with no in-app purchases.

### Do 纳风 or Hi Rheem have ads?

Neither 纳风 nor Hi Rheem shows ads.

### Which is updated more often, 纳风 or Hi Rheem?

纳风 ships an update every 28 months, and Hi Rheem every 12 months. Most recently, 纳风 was updated on November 7, 2026 and Hi Rheem on November 7, 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.*