# かんたん木造 vs DRA Viewer

The clearest difference is update cadence: DRA Viewer at every 2 months against かんたん木造's every 6 months. DRA Viewer also leads on iOS requirement (13.0 vs 17.0). On price, ads, 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.

かんたん木造 ships an update every 6 months, DRA Viewer every 2 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | かんたん木造 | DRA Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Size | 2 MB | 27 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [株式会社ストラクチャー](https://appshunter.io/developer/1097429252) | [株式会社建築ピボット](https://appshunter.io/developer/1450903325) |

## What reviewers say

### かんたん木造

[App page](https://appshunter.io/ios/app/id1374649182)

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

**In-app purchases:** none


### DRA Viewer

[App page](https://appshunter.io/ios/app/dra-viewer/id1450903326)

**In-app purchases:** none


## Frequently asked questions

### Is かんたん木造 free?

かんたん木造 is free to download, with no in-app purchases.

### Is DRA Viewer free?

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

### Do かんたん木造 or DRA Viewer have ads?

Neither かんたん木造 nor DRA Viewer shows ads.

### Which is updated more often, かんたん木造 or DRA Viewer?

かんたん木造 ships an update every 6 months, and DRA Viewer every 2 months. Most recently, かんたん木造 was updated on October 26, 2026 and DRA Viewer on October 26, 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.*