# STL Viewer vs Pathly

The clearest difference is update cadence: Pathly at every 2 days against STL Viewer's monthly. STL Viewer's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. STL Viewer sells 1 one-off in-app purchase and Pathly sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

STL Viewer ships an update monthly, Pathly every 2 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | STL Viewer | Pathly |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Size | 38 MB | 1 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Mohamed Nagy](https://appshunter.io/developer/1582361271) | [Jhomar Maravillas](https://appshunter.io/developer/6783703541) |

## What reviewers say

### STL Viewer

[App page](https://appshunter.io/ios/app/stl-viewer-3d-model-and-print/id6769513616)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $9.99 | one-time |


### Pathly

[App page](https://appshunter.io/ios/app/pathly-g-code-viewer/id6792144397)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Unlimited | $4.99 | one-time |


## Frequently asked questions

### Is STL Viewer free?

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

### Is Pathly free?

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

### Do STL Viewer or Pathly have ads?

Neither STL Viewer nor Pathly shows ads.

### Which is updated more often, STL Viewer or Pathly?

STL Viewer ships an update monthly, and Pathly every 2 days. Most recently, STL Viewer was updated on October 2, 2026 and Pathly on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*