# MARC BLINDAGENS vs STL Viewer

The clearest difference is in-app purchases: MARC BLINDAGENS at none against STL Viewer's 8. MARC BLINDAGENS also leads on ads (none vs shown). STL Viewer's advantage is update cadence (every 2 weeks vs every 9 months) and iOS requirement (15.0 vs 18.0). On price and device support there is nothing between them.

Both are free to download. STL Viewer sells 8 in-app purchases, starting at $1.99 per month. MARC BLINDAGENS asks for nothing beyond the download.

MARC BLINDAGENS ships an update every 9 months, STL Viewer every 2 weeks. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | MARC BLINDAGENS | STL Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 2 weeks** |
| Size | 48 MB | 49 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MYTRACE INNOVATION SOLUCOES DE TI](https://appshunter.io/developer/1111601879) | [Sahana A S](https://appshunter.io/developer/1800491118) |

## What reviewers say

### MARC BLINDAGENS

[App page](https://appshunter.io/ios/app/marc-blindagens/id1610019653)

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

**In-app purchases:** none


### STL Viewer

[App page](https://appshunter.io/ios/app/stl-viewer-3d-print-and-g-code/id6813788641)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LayerPeek Pro Monthly | $1.99 | per month |
| Pro Lifetime Limited Offer | $5.99 | one-time |
| Pro Lifetime Limited Offer | $7.99 | one-time |
| Pro Lifetime Limited Offer | $9.99 | one-time |
| Pro Lifetime Limited Offer | $11.99 | one-time |
| Pro Lifetime Limited Offer | $13.99 | one-time |
| Pro Lifetime Limited Offer | $15.99 | one-time |
| LayerPeek Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is MARC BLINDAGENS free?

MARC BLINDAGENS 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 MARC BLINDAGENS or STL Viewer have ads?

STL Viewer shows ads; MARC BLINDAGENS does not.

### Which is updated more often, MARC BLINDAGENS or STL Viewer?

MARC BLINDAGENS ships an update every 9 months, and STL Viewer every 2 weeks. Most recently, MARC BLINDAGENS was updated on November 3, 2026 and STL Viewer on November 10, 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.*