# SleepisolC vs K·DERM

The clearest difference is ads: SleepisolC at none against K·DERM's shown. K·DERM's advantage is update cadence (every 3 days vs every 5 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

SleepisolC ships an update every 5 weeks, K·DERM every 3 days. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | SleepisolC | K·DERM |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Free | — |
| Size | 210 MB | 33 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [leesol](https://appshunter.io/developer/1584929445) | [GI WOONG PARK](https://appshunter.io/developer/1894200488) |

## What reviewers say

### SleepisolC

[App page](https://appshunter.io/ios/app/sleepisolc/id6738976438)

This app offers customized sound therapy and versatile modes like sleep, stress relief, and focus. It connects seamlessly with a dedicated device to help users achieve a healthier lifestyle through improved sleep and mental well-being.

**Highlights:** Customizable intensity and time settings, Multiple modes: sleep, stress, healing, focus, Binaural beats sound therapy, Automatic device connection, User-friendly interface

**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 SleepisolC free?

SleepisolC 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 SleepisolC or K·DERM have ads?

K·DERM shows ads; SleepisolC does not.

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

SleepisolC ships an update every 5 weeks, and K·DERM every 3 days. Most recently, SleepisolC was updated on October 7, 2026 and K·DERM on October 16, 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.*