# Sketch Viewer UP vs Dogma CSMS

The clearest difference is in-app purchases: Dogma CSMS at none against Sketch Viewer UP's 3. Sketch Viewer UP's advantage is update cadence (every 8 days vs every 24 months) and device support. On price there is nothing between them.

Both are free to download. Sketch Viewer UP sells 3 one-off in-app purchases. Dogma CSMS asks for nothing beyond the download.

Sketch Viewer UP ships an update every 8 days, Dogma CSMS every 24 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Sketch Viewer UP | Dogma CSMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.6 (10 ratings)](https://appshunter.io/ios/app/sketch-viewer-up-model-browser/id6447847214/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | **Every 8 days** | Every 24 months |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 18 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 17+ | 4+ |
| Developer | [骁宇 陈](https://appshunter.io/developer/1836429187) | [Pretto SRL](https://appshunter.io/developer/1724149523) |

## What reviewers say

### Sketch Viewer UP

[App page](https://appshunter.io/ios/app/sketch-viewer-up-model-browser/id6447847214)

This application allows users to import and view 3D models from various professional design software. It supports a wide range of file formats, making it convenient for designers, engineers, and students to access and analyze 3D drawings on their mobile devices.

**Highlights:** Import and view 3D drawings, Supports multiple professional 3D file formats, Collection of standard industry libraries, Mobile 3D viewing software, Professional CAD drawing and modeling

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一季度会员 | $9.99 | one-time |
| 一年会员 | $24.99 | one-time |
| 永久会员 | $29.99 | one-time |


### Dogma CSMS

[App page](https://appshunter.io/ios/app/dogma-csms/id6499024450)

**In-app purchases:** none


## Frequently asked questions

### Is Sketch Viewer UP free?

Sketch Viewer UP is free to download, with in-app purchases available.

### Is Dogma CSMS free?

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

### Which is updated more often, Sketch Viewer UP or Dogma CSMS?

Sketch Viewer UP ships an update every 8 days, and Dogma CSMS every 24 months. Most recently, Sketch Viewer UP was updated on November 3, 2026 and Dogma CSMS on October 30, 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.*