# ARuler vs GLTF Viewer · Convert OBJ/STL

The clearest difference is rating: GLTF Viewer · Convert OBJ/STL at 5.0 against ARuler's 1.0. GLTF Viewer · Convert OBJ/STL also leads on in-app purchases (none vs 1) and update cadence (every 3 days vs every 3 months). ARuler's advantage is iOS requirement (11.0 vs 15.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. ARuler sells 1 one-off in-app purchase. GLTF Viewer · Convert OBJ/STL asks for nothing beyond the download.

GLTF Viewer · Convert OBJ/STL holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

ARuler ships an update every 3 months, GLTF Viewer · Convert OBJ/STL every 3 days. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ARuler | GLTF Viewer · Convert OBJ/STL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/aruler/id1290158408/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gltf-viewer-convert-objstl/id6776793016/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 47 MB | 26 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | +4 |
| Developer | [思远 伍](https://appshunter.io/developer/1128300278) | [Rush Tools LLC](https://appshunter.io/developer/1896773547) |

## What reviewers say

### ARuler

[App page](https://appshunter.io/ios/app/aruler/id1290158408)

This utility app provides a convenient measuring tool directly on your smartphone. It allows for accurate measurements of objects without any extra hardware, and you can save and share your results.

**Highlights:** Accurate measurements, No additional hardware required, Save measurements, Share measurements

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro version | $0.99 | one-time |


### GLTF Viewer · Convert OBJ/STL

[App page](https://appshunter.io/ios/app/gltf-viewer-convert-objstl/id6776793016)

View and inspect 3D models in glTF and GLB formats with advanced rendering and animation playback. Offers a full inspector for scene graph, materials, and animations. Advanced features like export and AR require an in-app purchase.

**Highlights:** View glTF and GLB 3D models, Orbit, pan, and zoom controls, Multiple render modes, Embedded animation playback, Full glTF inspector, Export to multiple formats (in-app purchase), AR viewing (in-app purchase)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ARuler free?

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

### Is GLTF Viewer · Convert OBJ/STL free?

GLTF Viewer · Convert OBJ/STL is free to download, with no in-app purchases.

### Which has better reviews, ARuler or GLTF Viewer · Convert OBJ/STL?

GLTF Viewer · Convert OBJ/STL is rated higher. ARuler averages 1.0 out of 5 from 1 ratings, while GLTF Viewer · Convert OBJ/STL averages 5.0 from 1 ratings.

### Do ARuler or GLTF Viewer · Convert OBJ/STL have ads?

Neither ARuler nor GLTF Viewer · Convert OBJ/STL shows ads.

### Which is updated more often, ARuler or GLTF Viewer · Convert OBJ/STL?

ARuler ships an update every 3 months, and GLTF Viewer · Convert OBJ/STL every 3 days. Most recently, ARuler was updated on October 7, 2026 and GLTF Viewer · Convert OBJ/STL on October 18, 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.*