# Graffity Viewer vs STL File Viewer Pro

The clearest difference is in-app purchases: Graffity Viewer at none against STL File Viewer Pro's 3. Graffity Viewer also leads on ads (none vs shown). STL File Viewer Pro's advantage is chart position (#61 vs unranked) and update cadence (fortnightly vs monthly). On price and device support there is nothing between them.

Both are free to download. STL File Viewer Pro sells 3 in-app purchases, starting at $1.99 per 7 days. Graffity Viewer asks for nothing beyond the download.

Graffity Viewer ships an update monthly, STL File Viewer Pro fortnightly. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Graffity Viewer | STL File Viewer Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (81 ratings)](https://appshunter.io/ios/app/stl-file-viewer-pro/id6741022143/reviews)** |
| Number of ratings | — | **81** |
| Positive reviews | — | 10.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#61** |
| Size | 41 MB | 16 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [GRAFFITY TECHNOLOGIES COMPANY LIMITED](https://appshunter.io/developer/1613154471) | [Andeesh Mehdi Syed](https://appshunter.io/developer/1676226599) |

## What reviewers say

### Graffity Viewer

[App page](https://appshunter.io/ios/app/graffity-viewer/id6451207164)

**Features:** Vision Pro support

**In-app purchases:** none


### STL File Viewer Pro

[App page](https://appshunter.io/ios/app/stl-file-viewer-pro/id6741022143)

**Currently charting:** #61 Top Grossing · Developer Tools, #207 Top Free · Developer Tools (US App Store)

Easily view, rotate, and inspect 3D STL files on your iPhone or iPad. Load models instantly from various sources for 3D printing, design review, or engineering inspection.

**Highlights:** Instant STL file loading, Full 360° rotation and zoom, Sharp detail rendering, Light and dark mode support, Lightweight and fast performance, Open files from Files, email, AirDrop

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Monthly | $3.99 | per month |
| Ad Free for 1 Year | $24.99 | per year |


## Frequently asked questions

### Is Graffity Viewer free?

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

### Is STL File Viewer Pro free?

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

### Do Graffity Viewer or STL File Viewer Pro have ads?

STL File Viewer Pro shows ads; Graffity Viewer does not.

### Which is updated more often, Graffity Viewer or STL File Viewer Pro?

Graffity Viewer ships an update monthly, and STL File Viewer Pro fortnightly. Most recently, Graffity Viewer was updated on October 9, 2026 and STL File Viewer Pro on October 24, 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.*