# ひみつの壁紙 vs Muka

The clearest difference is review sentiment: Muka at 88% against ひみつの壁紙's 25%. Muka also leads on update cadence (every 2 days vs every 5 months). ひみつの壁紙's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Muka sells 1 one-off in-app purchase. ひみつの壁紙 asks for nothing beyond the download.

ひみつの壁紙 ships an update every 5 months, Muka every 2 days. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | ひみつの壁紙 | Muka |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | **87.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 2 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 19 MB | 9 MB |
| Requires iOS | **13.2** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [kenichi kato](https://appshunter.io/developer/913467537) | [seihee han](https://appshunter.io/developer/629944907) |

## What reviewers say

### ひみつの壁紙

[App page](https://appshunter.io/ios/app/id1507375705)

Create a secret wallpaper that reveals your partner's face when you long-press the lock screen. Easily set a main wallpaper and a hidden photo for a private display.

**Highlights:** Secret lock screen wallpaper, Reveal partner's photo on long-press, Easy setup, Customizable main wallpaper, Hidden photo selection

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

**In-app purchases:** none


### Muka

[App page](https://appshunter.io/ios/app/muka-silent-camera/id6786973652)

Capture photos and videos discreetly without shutter sounds, ideal for quiet environments. Offers live filters, professional-grade image quality, and familiar camera controls for seamless use.

**Highlights:** Silent shooting without shutter sound, 15 live filters with real-time preview, Customizable filters with effect controls, 24MP/48MP HEIC photos and 4K 60fps HDR video, Familiar camera layout and fast launch, 5 shooting modes including Portrait and Slo-mo, 0.5x to 40x zoom with automatic lens switching

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 광고 제거 | $1.99 | one-time |


## Frequently asked questions

### Is ひみつの壁紙 free?

ひみつの壁紙 is free to download, with no in-app purchases.

### Is Muka free?

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

### Do ひみつの壁紙 or Muka have ads?

Muka shows ads; ひみつの壁紙 does not.

### Which is updated more often, ひみつの壁紙 or Muka?

ひみつの壁紙 ships an update every 5 months, and Muka every 2 days. Most recently, ひみつの壁紙 was updated on October 14, 2026 and Muka on October 8, 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.*