# 심신 안정 vs Keyz

The clearest difference is in-app purchases: 심신 안정 at none against Keyz's 1. 심신 안정 also leads on ads (none vs shown) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. Keyz sells 1 one-off in-app purchase. 심신 안정 asks for nothing beyond the download.

심신 안정 ships an update every 3 days, Keyz every 4 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 심신 안정 | Keyz |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 4 days |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 10 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [minwoo kim](https://appshunter.io/developer/1894249327) | [Keyz](https://appshunter.io/developer/1896749569) |

## What reviewers say

### 심신 안정

[App page](https://appshunter.io/ios/app/id6762464784)

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

**In-app purchases:** none


### Keyz

[App page](https://appshunter.io/ios/app/keyz-keycap-fidget/id6770513549)

Experience the satisfying click of mechanical keyboards on your phone. Customize keycaps, backgrounds, and sounds for a personalized fidgeting experience. Unlock daily rewards and track your taps.

**Highlights:** Customizable keycap and background skins, Multiple sound packs including mechanical and typewriter, LED backlight mode, Customizable key labels with letters or emojis, Daily streaks and secret skin collection, Click counter

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pass | $2.99 | one-time |


## Frequently asked questions

### Is 심신 안정 free?

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

### Is Keyz free?

Keyz is free to download, with in-app purchases available.

### Do 심신 안정 or Keyz have ads?

Keyz shows ads; 심신 안정 does not.

### Which is updated more often, 심신 안정 or Keyz?

심신 안정 ships an update every 3 days, and Keyz every 4 days. Most recently, 심신 안정 was updated on October 28, 2026 and Keyz on October 31, 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.*