# SmartFire vs 火先知（单位版）

The clearest difference is iOS requirement: SmartFire at 12.0 against 火先知（单位版）'s 15. 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.

SmartFire ships an update every 2 months, 火先知（单位版） every 5 weeks. The most recent releases landed on October 20, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SmartFire | 火先知（单位版） |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 99 MB | 165 MB |
| Requires iOS | **12.0** | 15 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Heiman Technology Co., Ltd.](https://appshunter.io/developer/1060327146) | [Hikvision Digital Technology Co.,Ltd](https://appshunter.io/developer/358934279) |

## What reviewers say

### SmartFire

[App page](https://appshunter.io/ios/app/smartfire/id1426995602)

**Features:** macOS Compatibility

**In-app purchases:** none


### 火先知（单位版）

[App page](https://appshunter.io/ios/app/id1521619522)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SmartFire free?

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

### Is 火先知（单位版） free?

火先知（单位版） is free to download, with no in-app purchases.

### Do SmartFire or 火先知（单位版） have ads?

Neither SmartFire nor 火先知（单位版） shows ads.

### Which is updated more often, SmartFire or 火先知（单位版）?

SmartFire ships an update every 2 months, and 火先知（单位版） every 5 weeks. Most recently, SmartFire was updated on October 20, 2026 and 火先知（单位版） on October 10, 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.*