# ASM Pocket vs STL Viewer

The clearest difference is price: ASM Pocket at Free against STL Viewer's $0.99. ASM Pocket also leads on in-app purchases (none vs 5) and iOS requirement (13.0 vs 17.0). STL Viewer's advantage is update cadence (every 4 weeks vs every 25 months). On ads and device support there is nothing between them.

ASM Pocket is free to download; STL Viewer costs $0.99 up front. STL Viewer sells 5 in-app purchases, starting at $2.99 per month. ASM Pocket asks for nothing beyond the download.

ASM Pocket ships an update every 25 months, STL Viewer every 4 weeks. The most recent releases landed on November 11, 2026 and November 14, 2026 respectively.

## The numbers

| Metric | ASM Pocket | STL Viewer |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stl-viewer-3d-mesh/id6445801487/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 4 weeks** |
| Monetization | — | Paid |
| Size | 31 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pfeiffer Vacuum GmbH](https://appshunter.io/developer/445843155) | [Felipe Marques de Barros](https://appshunter.io/developer/1459294806) |

## What reviewers say

### ASM Pocket

[App page](https://appshunter.io/ios/app/asm-pocket/id982140994)

**Features:** macOS Compatibility

**In-app purchases:** none


### STL Viewer

[App page](https://appshunter.io/ios/app/stl-viewer-3d-mesh/id6445801487)

View, explore, and edit 3D models on your iPhone or iPad. Basic viewing is included with purchase, with optional upgrades for advanced creation, editing, and reporting features. Models are processed locally for privacy.

**Highlights:** Open and view STL files, Rotate, pan, and zoom models, Basic model information inspection, Create and edit 3D models, Measure distances and angles, Export to multiple file formats, Generate local PDF reports

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| STL Viewer Pro Mensal | $2.99 | per month |
| STL Viewer Studio Mensal | $5.99 | per month |
| STL Viewer Pro Anual | $22.99 | per year |
| STL Viewer Studio Anual | $49.99 | per year |
| STL Viewer Pro Vitalício | $39.99 | one-time |


## Frequently asked questions

### Is ASM Pocket free?

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

### Is STL Viewer free?

STL Viewer costs $0.99, and also offers in-app purchases.

### Do ASM Pocket or STL Viewer have ads?

Neither ASM Pocket nor STL Viewer shows ads.

### Which is updated more often, ASM Pocket or STL Viewer?

ASM Pocket ships an update every 25 months, and STL Viewer every 4 weeks. Most recently, ASM Pocket was updated on November 11, 2026 and STL Viewer on November 14, 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.*