# STL Viewer vs HaulStamp

The clearest difference is price: STL Viewer at Free against HaulStamp's $3.59. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

STL Viewer is free to download; HaulStamp costs $3.59 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | STL Viewer | HaulStamp |
| --- | --- | --- |
| Price | **Free** | $3.59 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 43 months | — |
| Size | 4 MB | 8 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Felipe Marques de Barros](https://appshunter.io/developer/1459294806) | [Makoto Fukuoka](https://appshunter.io/developer/1817908735) |

## What reviewers say

### STL Viewer

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

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

**In-app purchases:** none


### HaulStamp

[App page](https://appshunter.io/ios/app/haulstamp/id6798447816)

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

**In-app purchases:** none


## Frequently asked questions

### Is STL Viewer free?

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

### Is HaulStamp free?

HaulStamp costs $3.59, with no in-app purchases.

### Do STL Viewer or HaulStamp have ads?

Neither STL Viewer nor HaulStamp shows ads.

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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.*