# Keep warm vs NRHeatTech

The clearest difference is rating: NRHeatTech at 3.7 against Keep warm's 1.9. NRHeatTech also leads on review sentiment (60% vs 33%). Keep warm's advantage is update cadence (weekly vs every 11 months). On price, ratings volume, 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.

NRHeatTech holds the better App Store score, 3.7 against 1.9. Both are backed by a comparable volume of ratings — 14 and 6 respectively. Written reviews point the same way: 33% of Keep warm's written reviews are positive against 60% of NRHeatTech's.

Keep warm ships an update weekly, NRHeatTech every 11 months. The most recent releases landed on June 1, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Keep warm | NRHeatTech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.9 (14 ratings)](https://appshunter.io/ios/app/keep-warm/id6449612773/reviews) | **[3.7 (6 ratings)](https://appshunter.io/ios/app/nrheattech/id6451778873/reviews)** |
| Number of ratings | **14** | 6 |
| Positive reviews | 33.3% of reviews | **60.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 11 months |
| Monetization | Free | Free |
| Size | 2 MB | 27 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen Mijia Investment Co.,Ltd](https://appshunter.io/developer/1570759215) | [利前 李](https://appshunter.io/developer/1698623411) |

## What reviewers say

### Keep warm

[App page](https://appshunter.io/ios/app/keep-warm/id6449612773)

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.

**Highlights:** Bluetooth pairing, Temperature control, Smart life integration, Improved comfort

**Features:** macOS Compatibility

**In-app purchases:** none


### NRHeatTech

[App page](https://appshunter.io/ios/app/nrheattech/id6451778873)

Control your smart heating clothing directly from your device. Adjust temperatures for different zones and experience a warmer, more comfortable, and stylish way to stay heated.

**Highlights:** Adjust heating clothing temperature, Control specific hot zones, Smart clothing technology integration, Modern heating alternative, Stylish and comfortable experience

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Keep warm free?

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

### Is NRHeatTech free?

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

### Which has better reviews, Keep warm or NRHeatTech?

NRHeatTech is rated higher. Keep warm averages 1.9 out of 5 from 14 ratings, while NRHeatTech averages 3.7 from 6 ratings.

### Do Keep warm or NRHeatTech have ads?

Neither Keep warm nor NRHeatTech shows ads.

### Which is updated more often, Keep warm or NRHeatTech?

Keep warm ships an update weekly, and NRHeatTech every 11 months. Most recently, Keep warm was updated on June 1, 2026 and NRHeatTech on June 11, 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.*