# CAD快速看图 vs 画门窗Pro

The clearest difference is in-app purchases: 画门窗Pro at none against CAD快速看图's 4. CAD快速看图's advantage is update cadence (weekly vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CAD快速看图 sells 4 in-app purchases, starting at $9.99 per 7 days. 画门窗Pro asks for nothing beyond the download.

CAD快速看图 ships an update weekly, 画门窗Pro every 9 months. The most recent releases landed on September 26, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | CAD快速看图 | 画门窗Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/cad-dwg/id1638681851/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 30.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 months |
| Monetization | Free with in-app purchases | — |
| Size | 34 MB | 40 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [浩 殷](https://appshunter.io/developer/1755121769) | [强 文](https://appshunter.io/developer/674834521) |

## What reviewers say

### CAD快速看图

[App page](https://appshunter.io/ios/app/cad-dwg/id1638681851)

Easily view and annotate DWG files, including 2D and 3D drawings. Convert drawings to PDF or images, scan paper documents, and transfer files between PC and mobile devices. Offers cloud storage and comparison tools for multiple drawings.

**Highlights:** View 2D and 3D DWG drawings, Annotate and mark up drawings, Convert DWG to PDF or image, Scan paper drawings to digital, File transfer between PC and mobile, 10GB cloud storage, Compare multiple drawings

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CAD看图服务 | $9.99 | per 7 days |
| CAD看图服务 | $19.99 | per month |
| CAD看图服务 | $39.99 | per 3 months |
| CAD看图服务 | $49.99 | per year |


### 画门窗Pro

[App page](https://appshunter.io/ios/app/pro/id6446976815)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CAD快速看图 free?

CAD快速看图 is free to download, with in-app purchases available.

### Is 画门窗Pro free?

画门窗Pro is free to download, with no in-app purchases.

### Do CAD快速看图 or 画门窗Pro have ads?

Neither CAD快速看图 nor 画门窗Pro shows ads.

### Which is updated more often, CAD快速看图 or 画门窗Pro?

CAD快速看图 ships an update weekly, and 画门窗Pro every 9 months. Most recently, CAD快速看图 was updated on September 26, 2026 and 画门窗Pro on September 15, 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.*