# RheoFit vs K·DERM

The clearest difference is ads: RheoFit at none against K·DERM's shown. RheoFit also leads on iOS requirement (13 vs 15.1). K·DERM's advantage is update cadence (every 3 days vs weekly). On price, 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.

RheoFit ships an update weekly, K·DERM every 3 days. The most recent releases landed on September 29, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | RheoFit | K·DERM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/rheofit/id6497569508/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free | — |
| Size | 187 MB | 33 MB |
| Requires iOS | **13** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Yunwang Innovation Intelligence (shenzhen) Co., Ltd.](https://appshunter.io/developer/1725094284) | [GI WOONG PARK](https://appshunter.io/developer/1894200488) |

## What reviewers say

### RheoFit

[App page](https://appshunter.io/ios/app/rheofit/id6497569508)

This app serves as a personal rehabilitation therapist, offering customized massage experiences for muscle recovery. It provides various modes, smart solutions for different needs, and allows users to monitor device battery status.

**Highlights:** Multiple speed and focus modes, Customizable massage intervals and duration, 43 rehabilitation solutions for various needs, Battery status monitoring, User guide and function explanations

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

**In-app purchases:** none


### K·DERM

[App page](https://appshunter.io/ios/app/kderm/id6787333879)

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

**In-app purchases:** none


## Frequently asked questions

### Is RheoFit free?

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

### Is K·DERM free?

K·DERM is free to download, with no in-app purchases.

### Do RheoFit or K·DERM have ads?

K·DERM shows ads; RheoFit does not.

### Which is updated more often, RheoFit or K·DERM?

RheoFit ships an update weekly, and K·DERM every 3 days. Most recently, RheoFit was updated on September 29, 2026 and K·DERM on September 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.*