# KCFIR vs Soulsfeng

The clearest difference is iOS requirement: KCFIR at 12.0 against Soulsfeng's 15.0. 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.

KCFIR ships an update every 3 weeks, Soulsfeng every 5 weeks. The most recent releases landed on September 17, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | KCFIR | Soulsfeng |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Size | 18 MB | 24 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Kang Cheng Century Technology Co., Ltd.](https://appshunter.io/developer/1448125513) | [逢春 黄](https://appshunter.io/developer/1668735348) |

## What reviewers say

### KCFIR

[App page](https://appshunter.io/ios/app/kcfir/id1448125514)

**In-app purchases:** none


### Soulsfeng

[App page](https://appshunter.io/ios/app/soulsfeng/id6737499607)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KCFIR free?

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

### Is Soulsfeng free?

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

### Do KCFIR or Soulsfeng have ads?

Neither KCFIR nor Soulsfeng shows ads.

### Which is updated more often, KCFIR or Soulsfeng?

KCFIR ships an update every 3 weeks, and Soulsfeng every 5 weeks. Most recently, KCFIR was updated on September 17, 2026 and Soulsfeng on September 14, 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.*