# NAC client vs 地灾智防

The clearest difference is update cadence: 地灾智防 at every 11 days against NAC client's monthly. 地灾智防 also leads on iOS requirement (9.0 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.

NAC client ships an update monthly, 地灾智防 every 11 days. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | NAC client | 地灾智防 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Size | 52 MB | 29 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Infogo Technology Co., Ltd.](https://appshunter.io/developer/591634610) | [Zhejiang Provincial Institute of Geological Environmental Monitoring](https://appshunter.io/developer/1240028704) |

## What reviewers say

### NAC client

[App page](https://appshunter.io/ios/app/nac-client/id1089804682)

**Features:** Vision Pro support

**In-app purchases:** none


### 地灾智防

[App page](https://appshunter.io/ios/app/id1240028705)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NAC client free?

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

### Is 地灾智防 free?

地灾智防 is free to download, with no in-app purchases.

### Do NAC client or 地灾智防 have ads?

Neither NAC client nor 地灾智防 shows ads.

### Which is updated more often, NAC client or 地灾智防?

NAC client ships an update monthly, and 地灾智防 every 11 days. Most recently, NAC client was updated on October 7, 2026 and 地灾智防 on October 11, 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.*