# 大应急家 vs 维安

The clearest difference is update cadence: 维安 at every 3 weeks against 大应急家's every 2 months. 大应急家's advantage is iOS requirement (11.0 vs 15.6). 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.

大应急家 ships an update every 2 months, 维安 every 3 weeks. The most recent releases landed on September 20, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | 大应急家 | 维安 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 22 MB | 102 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Chongqing Da Emergency Intelligence Technology Co., Ltd.](https://appshunter.io/developer/1612950204) | [辽宁庆华物联网科技有限公司](https://appshunter.io/developer/1742939535) |

## What reviewers say

### 大应急家

[App page](https://appshunter.io/ios/app/id1612950202)

**Features:** macOS Compatibility

**In-app purchases:** none


### 维安

[App page](https://appshunter.io/ios/app/id6499259095)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 大应急家 free?

大应急家 is free to download, with no in-app purchases.

### Is 维安 free?

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

### Do 大应急家 or 维安 have ads?

Neither 大应急家 nor 维安 shows ads.

### Which is updated more often, 大应急家 or 维安?

大应急家 ships an update every 2 months, and 维安 every 3 weeks. Most recently, 大应急家 was updated on September 20, 2026 and 维安 on September 26, 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.*