STL Simple Viewer vs PVT CHAT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STL Simple Viewer
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.
- 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
Read full descriptionHide full description
STL Simple Viewer is a great app to quickly view STL, 3MF & DXF 3D files and export them to the most commonly used CAD formats. Features: - Supports STL files both ASCII and Binary formats. - Supports 3MF & DXF files. - Load files directly from ZIP archives. - Export to DXF, OBJ, DAE, PLY, USD, STL & 3MF. - Measure distances between points within your model. - Rotate, pan, and zoom models with intuitive touch controls. - Configure rendering options: faces, edges, points, background and transparency. - Render using a clipping plane (useful for viewing model interiors). - View models in Orthographic or Perspective mode. - Obtain model information including triangle count, bounding box, surface area, and volume. Privacy Policy: https://www.boviosoft.com/apps/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ For support or questions: support@boviosoft.com
PVT CHAT
Read full descriptionHide full description
Your Private Chat. Your Server. Your Rules. AES-256-GCM encrypted messaging, self-hosted on your own machine. No surveillance. Just secure, private communication. Everything You Need. Nothing You Don't. A modern chat experience built with a paranoid focus on privacy and control. Every message is encrypted at rest using AES-256-GCM with a unique IV per message. Your data is secured on your own server. Runs entirely on your machine. No third-party servers, databases, or cloud providers ever touch your data. Share your private server with anyone using a built-in ngrok tunnel. No router port forwarding needed. Full control: manage users, view server activity, configure the app, and control who can register. NEED-Native Server App The host installs a native desktop app (Windows, macOS, Linux). Users connect from any browser or the app — or install the web app as a PWA for a native feel on any device.
Screenshots
Verdict
The clearest difference is in-app purchases: PVT CHAT at none against STL Simple Viewer's 4. PVT CHAT also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.0). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. STL Simple Viewer sells 4 in-app purchases, starting at $0.99 per 7 days. PVT CHAT asks for nothing beyond the download.
| Parameter | STL Simple Viewer | PVT CHAT |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (909 ratings) — better | — |
| Positive reviews | 18.1% of reviews | — |
| Number of ratings | 909 — better | — |
| Update frequency | Every 5 months | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 19 MB | 36 MB |
| Age rating | 4+ | 9+ |
| Developer | Victor Bovio | THE LITTLE TEETH WORKSHOP L L C |
Bugs and requests
STL Simple Viewer
Reported bugs
3 issues- 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
3 requests- Add ability to save color/lighting settings
- Improve stability and reduce crashes
- Provide an ad-free paid version
PVT CHAT
Not enough reviews yet to summarise bugs or requests.
In-app purchases
STL Simple Viewer
- Pro version (1 week plan)$0.997 Days
- Pro version (1 month plan)3 Days trial$1.991 Month
- Remove Ads$2.99
- Export Pack$3.99
PVT CHAT
No in-app purchases









