# Space UWB vs STL Viewer

The clearest difference is in-app purchases: Space UWB at none against STL Viewer's 1. Space UWB also leads on ads (none vs shown). STL Viewer's advantage is update cadence (fortnightly vs every 2 months) and device support (3 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. STL Viewer sells 1 one-off in-app purchase. Space UWB asks for nothing beyond the download.

Space UWB ships an update every 2 months, STL Viewer fortnightly. The most recent releases landed on November 5, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Space UWB | STL Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/stl-viewer-3d-model-and-3mf/id6801906359/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | — | Ad-supported |
| Size | 1 MB | 28 MB |
| Requires iOS | 16.2 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [inc.freegrow](https://appshunter.io/developer/1645477951) | [Alper Vural](https://appshunter.io/developer/1728214585) |

## What reviewers say

### Space UWB

[App page](https://appshunter.io/ios/app/space-uwb/id6745208882)

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

**In-app purchases:** none


### STL Viewer

[App page](https://appshunter.io/ios/app/stl-viewer-3d-model-and-3mf/id6801906359)

This app allows users to view, check, measure, and convert 3D models offline on their iPhone or iPad. It supports various file formats and provides printability estimates and AR previews. Models are processed locally for privacy.

**Highlights:** Supports 8+ 3D model formats, Offline viewing and processing, Printability checks, AR real-size previews, Measure and estimate print details, Convert models to STL, Open files from links

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support Extrude (ad-free) | $2.99 | one-time |


## Frequently asked questions

### Is Space UWB free?

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

### Is STL Viewer free?

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

### Do Space UWB or STL Viewer have ads?

STL Viewer shows ads; Space UWB does not.

### Which is updated more often, Space UWB or STL Viewer?

Space UWB ships an update every 2 months, and STL Viewer fortnightly. Most recently, Space UWB was updated on November 5, 2026 and STL Viewer on November 8, 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.*