# 귀뚜라미 온돌 vs mchain

The clearest difference is update cadence: mchain at weekly against 귀뚜라미 온돌's every 3 months. 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.

귀뚜라미 온돌 ships an update every 3 months, mchain weekly. Both last shipped on October 30, 2026.

## The numbers

| Metric | 귀뚜라미 온돌 | mchain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (6 ratings)](https://appshunter.io/ios/app/id1581746696/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 16.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free | — |
| Size | 67 MB | 145 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [(주)귀뚜라미](https://appshunter.io/developer/1037231896) | [m2cloud Inc](https://appshunter.io/developer/1566484064) |

## What reviewers say

### 귀뚜라미 온돌

[App page](https://appshunter.io/ios/app/id1581746696)

This app allows you to remotely control your carbon mat heating system via Bluetooth. It offers features like automatic temperature adjustment, individual zone control, a찜질 (jjimjil) mode for relaxation, and a dimming display for nighttime use. Ensure you have a compatible heating mat nearby to use its functions.

**Highlights:** Automatic temperature control, Individual zone heating, 찜질 (jjimjil) mode, Bluetooth smartphone control, Nighttime dimming display, Touch wake function, Dual control power on/off, 9-layer safety system

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

**In-app purchases:** none


### mchain

[App page](https://appshunter.io/ios/app/mchain/id6740797123)

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

**In-app purchases:** none


## Frequently asked questions

### Is 귀뚜라미 온돌 free?

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

### Is mchain free?

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

### Do 귀뚜라미 온돌 or mchain have ads?

Neither 귀뚜라미 온돌 nor mchain shows ads.

### Which is updated more often, 귀뚜라미 온돌 or mchain?

귀뚜라미 온돌 ships an update every 3 months, and mchain weekly. Most recently, 귀뚜라미 온돌 was updated on October 30, 2026 and mchain on October 30, 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.*