# STL Master vs Tripo AI

The clearest difference is in-app purchases: STL Master at none against Tripo AI's 6. STL Master also leads on review sentiment (86% vs 59%) and device support (4 vs 2). Tripo AI's advantage is rating (4.6 vs 4.2) and ratings volume (2.8K vs 51). On price and ads there is nothing between them.

Both are free to download. Tripo AI sells 6 in-app purchases, starting at $15.99 per month. STL Master asks for nothing beyond the download.

Tripo AI holds the better App Store score, 4.6 against 4.2. That said, the two scores are not equally well evidenced: Tripo AI has 2.8K ratings behind it against 51, so its average is the more settled of the two. Written reviews complicate that: 86% of STL Master's written reviews are positive against 59% of Tripo AI's, so the app with the better star average is not the one people write more warmly about.

STL Master ships an update monthly, Tripo AI every 9 days. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | STL Master | Tripo AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (51 ratings)](https://appshunter.io/ios/app/stl-master/id1435885139/reviews) | **[4.6 (2.8K ratings)](https://appshunter.io/ios/app/tripo-ai-3d-model-generator/id6748596826/reviews)** |
| Number of ratings | 51 | **2.8K** |
| Positive reviews | **86.1% of reviews** | 58.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 68 MB | 93 MB |
| Requires iOS | **14.1** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [JA Logic Labs LLC](https://appshunter.io/developer/1745984849) | [Holymolly Limited](https://appshunter.io/developer/1847629375) |

## 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


### Tripo AI

[App page](https://appshunter.io/ios/app/tripo-ai-3d-model-generator/id6748596826)

Transform images or text prompts into high-quality 3D models using advanced AI. Generate custom 3D assets for various projects, from design and 3D printing to personal creations, in just a few taps.

**Highlights:** Text-to-3D generation, Image-to-3D generation, High-quality 3D model creation, Custom 3D asset generation, 3D model refinement, Save and share creations

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tripo 3D AI - Pro Plan | $15.99 | per month |
| Tripo 3D AI - Pro Plan | $19.99 | per month |
| Advanced Plan | $38.99 | per month |
| Ultimate Plan | $89.99 | per month |
| Tripo 3D AI - Pro Plan | $155.99 | per year |
| Tripo 3D AI - Max Plan | $539.99 | per year |


## Frequently asked questions

### Is STL Master free?

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

### Is Tripo AI free?

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

### Which has better reviews, STL Master or Tripo AI?

Tripo AI is rated higher. STL Master averages 4.2 out of 5 from 51 ratings, while Tripo AI averages 4.6 from 2.8K ratings.

### Do STL Master or Tripo AI have ads?

Neither STL Master nor Tripo AI shows ads.

### Which is updated more often, STL Master or Tripo AI?

STL Master ships an update monthly, and Tripo AI every 9 days. Most recently, STL Master was updated on November 2, 2026 and Tripo AI on November 6, 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.*