# ADDHEAT vs iWarmU

The clearest difference is review sentiment: ADDHEAT at 86% against iWarmU's 20%. ADDHEAT also leads on rating (3.9 vs 2.1) and update cadence (monthly vs every 6 months). iWarmU's advantage is ratings volume (73 vs 7). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ADDHEAT holds the better App Store score, 3.9 against 2.1. That said, the two scores are not equally well evidenced: iWarmU has 73 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 86% of ADDHEAT's written reviews are positive against 20% of iWarmU's.

ADDHEAT ships an update monthly, iWarmU every 6 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | ADDHEAT | iWarmU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (7 ratings)](https://appshunter.io/ios/app/addheat/id1533216800/reviews)** | [2.1 (73 ratings)](https://appshunter.io/ios/app/iwarmu/id1576856224/reviews) |
| Number of ratings | 7 | **73** |
| Positive reviews | **85.7% of reviews** | 20.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 months |
| Monetization | Free | Free |
| Size | 19 MB | 4 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MATSUM INC](https://appshunter.io/developer/1533216802) | [Shenzhen Zhongzhi Liancheng Technology Co., Ltd.](https://appshunter.io/developer/1457957513) |

## What reviewers say

### ADDHEAT

[App page](https://appshunter.io/ios/app/addheat/id1533216800)

Control heating products with built-in technology from your smartphone. Adjust heat settings across multiple devices in the same environment with ten levels of modulation. This free application is designed for users of wearable heating modules.

**Highlights:** Smartphone control, Adjust heat settings, Multiple device control, Ten heat levels, Compatible with ADDHEAT technology products

**Features:** macOS Compatibility

**In-app purchases:** none


### iWarmU

[App page](https://appshunter.io/ios/app/iwarmu/id1576856224)

Control your warm clothing and socks with this app. It automatically searches for and connects to your devices, offering precise temperature adjustments and quick warming or timing functions.

**Highlights:** Automatic device search and connection, 3 temperature levels, Stepless temperature control, Quick warming settings, Timing settings

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ADDHEAT free?

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

### Is iWarmU free?

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

### Which has better reviews, ADDHEAT or iWarmU?

ADDHEAT is rated higher. ADDHEAT averages 3.9 out of 5 from 7 ratings, while iWarmU averages 2.1 from 73 ratings.

### Do ADDHEAT or iWarmU have ads?

Neither ADDHEAT nor iWarmU shows ads.

### Which is updated more often, ADDHEAT or iWarmU?

ADDHEAT ships an update monthly, and iWarmU every 6 months. Most recently, ADDHEAT was updated on November 3, 2026 and iWarmU on November 3, 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.*