# HD199影音新时代 vs 纳风

The clearest difference is update cadence: HD199影音新时代 at every 6 weeks 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.

HD199影音新时代 ships an update every 6 weeks, 纳风 every 28 months. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | HD199影音新时代 | 纳风 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 28 months |
| Monetization | Free | — |
| Size | 79 MB | 80 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [阳华 董](https://appshunter.io/developer/1424051168) | [Zhejiang Naflow Purification Technology Co.,Ltd](https://appshunter.io/developer/1516408175) |

## What reviewers say

### HD199影音新时代

[App page](https://appshunter.io/ios/app/hd199/id1424051169)

Connect with a large community of audio-visual enthusiasts for technical discussions and product news. Discover curated recommendations for high-quality audio-visual products and find reliable sources for pre-owned equipment.

**Highlights:** Audio-visual forum for technical exchange, Latest audio-visual news and updates, Curated selection of quality AV products, Marketplace for pre-owned audio-visual gear

**Features:** macOS Compatibility

**In-app purchases:** none


### 纳风

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HD199影音新时代 free?

HD199影音新时代 is free to download, with no in-app purchases.

### Is 纳风 free?

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

### Do HD199影音新时代 or 纳风 have ads?

Neither HD199影音新时代 nor 纳风 shows ads.

### Which is updated more often, HD199影音新时代 or 纳风?

HD199影音新时代 ships an update every 6 weeks, and 纳风 every 28 months. Most recently, HD199影音新时代 was updated on October 11, 2026 and 纳风 on October 25, 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.*