# STL Master vs Thangs

The clearest difference is review sentiment: STL Master at 86% against Thangs's 24%. STL Master also leads on rating (4.2 vs 3.0) and monetization model (free vs free with in-app purchases). Thangs's advantage is update cadence (weekly vs monthly). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

STL Master holds the better App Store score, 4.2 against 3.0. Both are backed by a comparable volume of ratings — 49 and 117 respectively. Written reviews point the same way: 86% of STL Master's written reviews are positive against 24% of Thangs's.

STL Master ships an update monthly, Thangs weekly. The most recent releases landed on June 8, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | STL Master | Thangs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (49 ratings)](https://appshunter.io/ios/app/stl-master/id1435885139/reviews)** | [3.0 (117 ratings)](https://appshunter.io/ios/app/thangs/id1636718933/reviews) |
| Number of ratings | 49 | **117** |
| Positive reviews | **86.1% of reviews** | 23.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 68 MB | 46 MB |
| Requires iOS | **14.1** | 16.4 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [JA Logic Labs LLC](https://appshunter.io/developer/1745984849) | [Physna, Inc](https://appshunter.io/developer/1636718935) |

## What reviewers say

### STL Master

[App page](https://appshunter.io/ios/app/stl-master/id1435885139)

View and interact with 3D models in augmented reality. Share instant screenshots and screen recordings of your designs directly from the app.

**Highlights:** STL file viewing, Augmented reality (AR) mode, Instant screenshots, Screen recording, Design sharing

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast and smooth rendering performance
- 💰 Completely free with no ads or trackers
- 🎨 High-quality rendering and visualization
- 📱 Works well on mobile devices (iPhone, iPad)
- 🌐 AR (Augmented Reality) feature

**What reviewers complain about**

- 🐛 Frequent crashes and freezing
- 🖱️ Difficult object manipulation and navigation
- 🔍 Zoom limitations (hard to zoom out/in)
- ❌ Inconsistent file loading and orientation
- 🎨 Overly shiny/metallic default appearance

**Reported bugs**

- App crashes immediately on launch
- Files won't open or load
- Objects disappear when moved
- Inconsistent file orientation on load
- Markup mode traps user and requires app restart

**Requested features**

- More color and material options
- Unit measurement display and metric/standard conversion
- How-to video tutorials for hidden features
- Proper zoom in/out controls
- Object positioning/movement button


### Thangs

[App page](https://appshunter.io/ios/app/thangs/id1636718933)

Explore the largest 3D model search engine with over 15 million models. Discover new creators and connect with a growing community for CAD, 3D printing, AR, and VR applications. Find or upload tens of thousands of models weekly across various 3D formats.

**Highlights:** Largest 3D search engine, Over 15 million 3D models, Discover 3D creators, Support for 30+ 3D formats, Filters for 3D printing, Connect with creators

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Efficient 3D model search across multiple platforms
- 👍 Intuitive and clean user interface
- 💡 Image-based search functionality
- 🔄 Seamless syncing with website account
- 📱 Easy browsing on mobile devices

**What reviewers complain about**

- 🐛 App stuck on splash/loading screen (critical)
- 🖼️ Images fail to load or display
- 🔐 Login functionality broken with 2FA
- ⚠️ Frequent app crashes
- 🔗 Paywall blocking most content

**Reported bugs**

- App freezes on splash screen and never loads
- Image preview loading failures
- 2FA login code submission button hidden behind keyboard
- Email/password login not functional
- App crashes within minutes of use

**Requested features**

- Direct download functionality from mobile app
- Dark mode option
- Ability to view liked models on mobile
- Zoom functionality for model images
- Save to collections feature


## Frequently asked questions

### Is STL Master free?

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

### Is Thangs free?

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

### Which has better reviews, STL Master or Thangs?

STL Master is rated higher. STL Master averages 4.2 out of 5 from 49 ratings, while Thangs averages 3.0 from 117 ratings.

### Do STL Master or Thangs have ads?

Neither STL Master nor Thangs shows ads.

### Which is updated more often, STL Master or Thangs?

STL Master ships an update monthly, and Thangs weekly. Most recently, STL Master was updated on June 8, 2026 and Thangs on September 25, 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.*