STP Viewer : STEP 3D
3D CAD File Reader & Opener
About
This application allows users to open and view large, complex 3D CAD files on their mobile devices. It supports standard STEP and STP file formats, offering smooth navigation and offline accessibility for professionals and enthusiasts alike.
What's New in STP Viewer
1.0
June 22, 2026
Subscriptions & In-App Purchases
Pro Access
Pro Access To All Features For A Week
Developer apps
FAQ
What is STP Viewer?
STP Viewer is a mobile application designed to open and render complex 3D CAD files in STEP and STP formats. It provides smooth 3D navigation and offline accessibility for viewing designs.
What file formats does STP Viewer support?
STP Viewer is fully optimized to read and render both .stp and .step file extensions, which are standard ISO 10303 files.
Can I use STP Viewer offline?
Yes, STP Viewer is fully functional without an active internet connection, making it ideal for use in secure facilities, remote locations, or offline workshops.
What CAD software is compatible with STP Viewer?
STP Viewer supports files generated from all major CAD software suites, including SolidWorks, Autodesk Fusion 360, AutoCAD, CATIA, PTC Creo, Rhino 3D, Siemens NX, and FreeCAD.
How much does STP Viewer cost?
STP Viewer is free to download and use. It offers optional premium subscription plans for unlimited access to advanced features and an ad-free experience.
What are the subscription options for STP Viewer?
STP Viewer offers flexible premium plans including a weekly plan for $1.99, a monthly plan for $4.99, and a yearly plan for $9.99, providing different levels of access and value.
Does STP Viewer have ads?
The free version of STP Viewer may contain advertisements. Users can opt for premium subscription plans to gain access to a completely ad-free workspace.
What is the update frequency for STP Viewer?
STP Viewer was last updated on June 22, 2026, with version 1.0. Specific update frequency details are not provided, but it is available on iPhone, iPad, and iPod.
