Keep warm vs Warm U
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Keep warm
Control the heating temperature of your smart socks via Bluetooth from your smartphone. This app allows for seamless pairing and temperature adjustment, enhancing your comfort and quality of life.
- Bluetooth pairing
- Temperature control
- Smart life integration
- Improved comfort
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Keep Warm is an intelligent APP, which can control the heating temperature of your heated socks by smartphone. Simply pair the Bluetooth signal of the heated socks via Bluetooth on your phone and start using the app. Start a smart life and improve your quality of life with Keep Warm.
Warm U
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Warm U is a Bluetooth control app that can control devices through Bluetooth. The app mainly provides heating and timing services. Users can easily control the heating temperature, timing and other functions of insoles to adapt to different environments and needs. This insole is particularly suitable for cold weather or situations that require prolonged standing or walking.
Screenshots
Verdict
Keep warm and Warm U are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 8, 2026 and September 29, 2026 respectively.
| Parameter | Keep warm | Warm U |
|---|---|---|
| Price | Free | Free |
| Rating | 1.9 (14 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Weekly | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 2 MB | 19 MB |
| Age rating | 4+ | 17+ |
| Developer | Shenzhen Mijia Investment Co.,Ltd | 海洋 刘 |
In-app purchases
Keep warm
No in-app purchases
Warm U
No in-app purchases
