# 工天 vs CAD快速看图

The clearest difference is in-app purchases: 工天 at none against CAD快速看图's 4. 工天 also leads on update cadence (every 8 days vs every 3 weeks) and iOS requirement (12.0 vs 15.0). CAD快速看图's advantage is ads (none vs shown). On price and device support 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. 工天 asks for nothing beyond the download.

工天 ships an update every 8 days, CAD快速看图 every 3 weeks. The most recent releases landed on October 12, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 工天 | CAD快速看图 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 20.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 113 MB | 42 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [成都华甸科技有限公司](https://appshunter.io/developer/1745925232) | [波 张](https://appshunter.io/developer/1726107240) |

## What reviewers say

### 工天

[App page](https://appshunter.io/ios/app/id6502567367)

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

**In-app purchases:** none


### CAD快速看图

[App page](https://appshunter.io/ios/app/cad-pdf/id6751618696)

This app provides a comprehensive mobile toolkit for CAD users, offering fast viewing, precise measurement, and seamless conversion of various drawing formats. It supports cloud collaboration and offline access, making it ideal for on-site work, design reviews, and study.

**Highlights:** Fast DWG/DXF viewing, Precise measurement tools, 2D/3D drawing detail, Cloud collaboration, Offline access, PDF conversion

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DWG | $9.99 | per 7 days |
| DWG | $14.99 | per month |
| DWG | $19.99 | per 3 months |
| DWG | $29.99 | per year |


## Frequently asked questions

### Is 工天 free?

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

### Is CAD快速看图 free?

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

### Do 工天 or CAD快速看图 have ads?

工天 shows ads; CAD快速看图 does not.

### Which is updated more often, 工天 or CAD快速看图?

工天 ships an update every 8 days, and CAD快速看图 every 3 weeks. Most recently, 工天 was updated on October 12, 2026 and CAD快速看图 on October 25, 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.*