# Sketch Viewer UP vs LinkMap

The clearest difference is in-app purchases: LinkMap at none against Sketch Viewer UP's 3. Sketch Viewer UP's advantage is update cadence (every 9 days vs every 3 months) and iOS requirement (13.0 vs 18.0). On price, ads and device support there is nothing between them.

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

Sketch Viewer UP ships an update every 9 days, LinkMap every 3 months. The most recent releases landed on October 5, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Sketch Viewer UP | LinkMap |
| --- | --- | --- |
| 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 | No |
| Update frequency | **Every 9 days** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 17 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [骁宇 陈](https://appshunter.io/developer/1836429187) | [玉荣 胡](https://appshunter.io/developer/1811048037) |

## 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

**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 |


### LinkMap

[App page](https://appshunter.io/ios/app/linkmap/id6745166200)

**Features:** macOS Compatibility

**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 LinkMap free?

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

### Do Sketch Viewer UP or LinkMap have ads?

Neither Sketch Viewer UP nor LinkMap shows ads.

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

Sketch Viewer UP ships an update every 9 days, and LinkMap every 3 months. Most recently, Sketch Viewer UP was updated on October 5, 2026 and LinkMap on October 11, 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.*