KCFIR vs Feet warm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KCFIR
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smart heated wear application .
Feet warm
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APP采用了低功耗BLE蓝牙通讯技术。通过手机连接产品蓝牙BLE，远程控制鞋垫 产品，实现手机控制温度调节，定时关机、按摩及加热产品调节等。解决了传统温控开关没有显示与按键过多，操作复杂等问题。
Screenshots
Verdict
The clearest difference is iOS requirement: Feet warm at 9.0 against KCFIR's 12.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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, Feet warm every 6 weeks. The most recent releases landed on October 4, 2026 and October 25, 2026 respectively.
| Parameter | KCFIR | Feet warm |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 5 MB |
| Age rating | 4+ | 12+ |
| Developer | Shenzhen Kang Cheng Century Technology Co., Ltd. | Shenzhen Hongruixin Electronic Co.,Ltd |
In-app purchases
KCFIR
No in-app purchases
Feet warm
No in-app purchases
