# CAD看图王 vs STP One

The clearest difference is update cadence: STP One at every 3 days against CAD看图王's every 6 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CAD看图王 sells 2 in-app purchases, starting at $3.99 per 7 days and STP One sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

CAD看图王 ships an update every 6 days, STP One every 3 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | CAD看图王 | STP One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cad/id6760328740/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 53 MB | 13 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bamboo Tech Co.,Ltd](https://appshunter.io/developer/1646272147) | [JAEYUN HWANG](https://appshunter.io/developer/6799562363) |

## What reviewers say

### CAD看图王

[App page](https://appshunter.io/ios/app/cad/id6760328740)

View CAD drawings on your mobile device with support for multiple file formats like DWG and DXF. Accurately display drawing content, quickly review details, and preview 2D/3D files anytime, anywhere.

**Highlights:** View CAD drawings on mobile, Supports DWG, DXF, and other formats, Accurate display of drawing content, Quick review of drawing details, 2D and 3D preview, Anytime, anywhere access

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周订阅 | $3.99 | per 7 days |
| 年订阅 | $17.99 | per year |


### STP One

[App page](https://appshunter.io/ios/app/stp-one-step-cad-viewer/id6802912144)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 스텝원 Pro 월간 | $9.99 | per month |
| 스텝원 Pro 연간 | $69.99 | per year |


## Frequently asked questions

### Is CAD看图王 free?

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

### Is STP One free?

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

### Do CAD看图王 or STP One have ads?

Neither CAD看图王 nor STP One shows ads.

### Which is updated more often, CAD看图王 or STP One?

CAD看图王 ships an update every 6 days, and STP One every 3 days. Most recently, CAD看图王 was updated on October 31, 2026 and STP One on October 29, 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.*