# 昭通应急 vs 维安

The clearest difference is iOS requirement: 昭通应急 at 11.0 against 维安's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 7, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | 昭通应急 | 维安 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 150 MB | 102 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Chengdu Fulimeng Environmental Protection Big Data Co., Ltd.](https://appshunter.io/developer/1435884795) | [辽宁庆华物联网科技有限公司](https://appshunter.io/developer/1742939535) |

## What reviewers say

### 昭通应急

[App page](https://appshunter.io/ios/app/id6443747416)

**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 昭通应急 free?

昭通应急 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 昭通应急 or 维安 have ads?

Neither 昭通应急 nor 维安 shows ads.

### Which is updated more often, 昭通应急 or 维安?

昭通应急 ships an update every 3 weeks, and 维安 every 3 weeks. Most recently, 昭通应急 was updated on September 7, 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.*