3D PDF Viewer vs FileOpen PDF Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
3D PDF Viewer
View and interact with 3D models embedded in PDF files on your mobile device. Easily zoom, pan, and rotate models using intuitive multi-touch gestures. Load files directly from cloud storage services like Dropbox and Google Drive.
- 3D PDF model rendering (.prc)
- Multi-touch gestures (zoom, pan, rotate)
- Import from cloud storage
- Open password-protected PDFs
- Integrated Box and Dropbox browsing
- Supports meshes and colors
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3D PDF Viewer is a lightweight 3D PDF document viewer with powerful capabilities. 3D PDF Viewer extends the use of 3D PDF to mobile devices by providing the user ability to view and interact with 3D models stored in 3D PDF files. User can easily zoom, pan and rotate 3D model with multi-touch gestures. The application recognises .pdf file extension and user can choose to load .pdf files into this application directly from other applications like email client, web downloads, FTP, Dropbox, Google Drive, Box and any other cloud storage applications. 3D PDF Viewer is integrated with Box and Dropbox cloud storage allowing user to directly browse files on Box.com and Dropbox.com storage in the application itself. Three sample 3D PDFs are bundled with the application. 3D PDF Viewer current version contains following features: - 3D PDF model rendering (.prc files) - Multi-touch gestures like zoom, pan, rotate and fit to screen - Import models from email attachment, Dropbox, Google Drive, Box or any other cloud storage application. - Open password protected pdf files. - Easy file browsing for Box and Dropbox user (Box and Dropbox cloud storage is natively integrated with the application). - Supports meshes and colors. Please do send your feedback to us 3DPDFViewer.iOS@ProtoTechSolutions.com
FileOpen PDF Viewer
This application allows users to view PDFs that have been encrypted using FileOpen technology on their Apple devices. It provides a straightforward way to access secure documents on iPhones and iPads.
- View FileOpen encrypted PDFs
- Supports Apple devices
- Simple document access
- Secure PDF viewing
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View FileOpen encrypted PDFs on your Apple device.
Screenshots
Verdict
The clearest difference is rating: 3D PDF Viewer at 1.5 against FileOpen PDF Viewer's 1.0. FileOpen PDF Viewer's advantage is review sentiment (13% vs 0%) and iOS requirement (11 vs 15.6). On price, ratings volume, update cadence and ads 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. Neither carries in-app purchases, so what you see is what you pay.
3D PDF Viewer holds the better App Store score, 1.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews complicate that: 0% of 3D PDF Viewer's written reviews are positive against 13% of FileOpen PDF Viewer's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 10 months. Both last shipped on June 4, 2026.
| Parameter | 3D PDF Viewer | FileOpen PDF Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (2 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 0.0% of reviews | 12.5% of reviews — better |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 10 months | Every 10 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 11 — better |
| Further details — not scored | ||
| Size | 21 MB | 120 MB |
| Age rating | 4+ | 4+ |
| Developer | ProtoTech Solutions and Services Pvt. Ltd. | FileOpen Systems Inc. |
Customer experience
3D PDF Viewer
FileOpen PDF Viewer
In-app purchases
3D PDF Viewer
No in-app purchases
FileOpen PDF Viewer
No in-app purchases
