# Sketch Viewer UP vs mallog24

The clearest difference is iOS requirement: Sketch Viewer UP at 13.0 against mallog24's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Sketch Viewer UP sells 3 one-off in-app purchases and mallog24 sells 1 in-app purchase, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Sketch Viewer UP ships an update every 8 days, mallog24 every 10 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Sketch Viewer UP | mallog24 |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 10 days |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 23 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [骁宇 陈](https://appshunter.io/developer/1836429187) | [Hyunwoo Kim](https://appshunter.io/developer/1895990806) |

## 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 |


### mallog24

[App page](https://appshunter.io/ios/app/mallog24/id6765552782)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| mallog24pro | $5.99 | per month |


## Frequently asked questions

### Is Sketch Viewer UP free?

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

### Is mallog24 free?

mallog24 is free to download, with in-app purchases available.

### Do Sketch Viewer UP or mallog24 have ads?

Neither Sketch Viewer UP nor mallog24 shows ads.

### Which is updated more often, Sketch Viewer UP or mallog24?

Sketch Viewer UP ships an update every 8 days, and mallog24 every 10 days. Most recently, Sketch Viewer UP was updated on November 3, 2026 and mallog24 on November 5, 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.*