# STL Simple Viewer vs Prabhu Communication App

The clearest difference is in-app purchases: Prabhu Communication App at none against STL Simple Viewer's 4. Prabhu Communication App also leads on ads (none vs shown) and update cadence (every 11 days vs every 5 months). On price and device support there is nothing between them.

Both are free to download. STL Simple Viewer sells 4 in-app purchases, starting at $0.99 per 7 days. Prabhu Communication App asks for nothing beyond the download.

STL Simple Viewer ships an update every 5 months, Prabhu Communication App every 11 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | STL Simple Viewer | Prabhu Communication App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (920 ratings)](https://appshunter.io/ios/app/stl-simple-viewer/id1493598400/reviews)** | — |
| Number of ratings | **920** | — |
| Positive reviews | 18.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 11 days** |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 72 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Victor Bovio](https://appshunter.io/developer/327627515) | [Kaushik Ranpariya](https://appshunter.io/developer/1773279250) |

## What reviewers say

### STL Simple Viewer

[App page](https://appshunter.io/ios/app/stl-simple-viewer/id1493598400)

Easily view and interact with 3D STL CAD models. Supports various file types and offers advanced rendering options for detailed analysis. Get model information and explore interiors with clipping planes.

**Highlights:** View ASCII and Binary STL files, Load STL from ZIP, Rotate, pan, and zoom, Orthogonal and Perspective modes, Model info (triangle count, bounding box), Rendering options (faces, edges, transparency), Clipping plane for interiors

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro version (1 week plan) | $0.99 | per 7 days |
| Pro version (1 month plan) | $1.99 | per month |
| Remove Ads | $2.99 | one-time |
| Export Pack | $3.99 | one-time |

**What reviewers like**

- 🚀 Simple and intuitive viewer
- 👍 Useful viewing options
- 💡 Supports multiple file formats

**What reviewers complain about**

- 🐛 Frequent crashes
- 🔋 High battery consumption
- 🚨 Excessive and intrusive ads
- 🔍 Limited functionality for larger files

**Reported bugs**

- App crashes when opening larger STL files
- Inability to open some file formats
- Ads continue to appear even after paying for ad removal

**Requested features**

- Add ability to save color/lighting settings
- Improve stability and reduce crashes
- Provide an ad-free paid version


### Prabhu Communication App

[App page](https://appshunter.io/ios/app/prabhu-communication-app/id6746641379)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is STL Simple Viewer free?

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

### Is Prabhu Communication App free?

Prabhu Communication App is free to download, with no in-app purchases.

### Do STL Simple Viewer or Prabhu Communication App have ads?

STL Simple Viewer shows ads; Prabhu Communication App does not.

### Which is updated more often, STL Simple Viewer or Prabhu Communication App?

STL Simple Viewer ships an update every 5 months, and Prabhu Communication App every 11 days. Most recently, STL Simple Viewer was updated on October 29, 2026 and Prabhu Communication App on October 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.*