# 片手キーボードPRO vs CradleViewer

The clearest difference is price: CradleViewer at Free against 片手キーボードPRO's $3.99. CradleViewer also leads on iOS requirement (9.1 vs 15.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

CradleViewer is free to download; 片手キーボードPRO costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

片手キーボードPRO ships an update every 3 months, CradleViewer every 4 months. The most recent releases landed on September 22, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 片手キーボードPRO | CradleViewer |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cradleviewer/id1207997595/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | — | Free |
| Size | 112 MB | 20 MB |
| Requires iOS | 15.6 | **9.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TAWASHI KAMEMUSHI](https://appshunter.io/developer/435733426) | [Software Cradle Co., Ltd.](https://appshunter.io/developer/1207997594) |

## What reviewers say

### 片手キーボードPRO

[App page](https://appshunter.io/ios/app/pro/id1021368752)

**Features:** Vision Pro support

**In-app purchases:** none


### CradleViewer

[App page](https://appshunter.io/ios/app/cradleviewer/id1207997595)

View simulation results from scSTREAM, SC/Tetra, scFLOW, and HeatDesigner. Manipulate modeled objects by rotating, moving, zooming, and toggling pre-set images or animations for detailed analysis.

**Highlights:** View simulation results, Rotate modeled objects, Move modeled objects, Zoom modeled objects, Toggle images/animation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 片手キーボードPRO free?

片手キーボードPRO costs $3.99, with no in-app purchases.

### Is CradleViewer free?

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

### Do 片手キーボードPRO or CradleViewer have ads?

Neither 片手キーボードPRO nor CradleViewer shows ads.

### Which is updated more often, 片手キーボードPRO or CradleViewer?

片手キーボードPRO ships an update every 3 months, and CradleViewer every 4 months. Most recently, 片手キーボードPRO was updated on September 22, 2026 and CradleViewer on September 17, 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.*