# KCFIR vs Warm U

The clearest difference is update cadence: Warm U at weekly against KCFIR's every 3 weeks. 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.

KCFIR ships an update every 3 weeks, Warm U weekly. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | KCFIR | Warm U |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 18 MB | 19 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen Kang Cheng Century Technology Co., Ltd.](https://appshunter.io/developer/1448125513) | [海洋 刘](https://appshunter.io/developer/1736870190) |

## What reviewers say

### KCFIR

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

**In-app purchases:** none


### Warm U

[App page](https://appshunter.io/ios/app/warm-u/id6504526300)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KCFIR free?

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

### Is Warm U free?

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

### Do KCFIR or Warm U have ads?

Neither KCFIR nor Warm U shows ads.

### Which is updated more often, KCFIR or Warm U?

KCFIR ships an update every 3 weeks, and Warm U weekly. Most recently, KCFIR was updated on September 17, 2026 and Warm U on September 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.*