STEP Viewer is a app that lets you view STEP (.stp, .step) CAD files in 3D on your iphone. ◆ Key Features • Convert STEP/STP files to GLB format for 3D rendering • Touch to zoom, rotate, and pan • 6-face view change (Front, Right, Back, Left, Top, Bottom) • Auto-rotation (pauses on touch, resumes after 3 seconds) • Converted GLB files saved automatically (Download folder) ◆ Supported Formats • Input: .stp, .step (STEP AP203, AP214) • Output: .glb (GL Transmission Format Binary) ◆ How to Use 1. Launch the app and tap the folder icon 2. Select a STEP file 3. View the 3D model after conversion 4. Touch to rotate, pinch to zoom ◆ License This app uses Open CASCADE Technology (LGPL-2.1) library. https://www.opencascade.com For inquiries or bug reports, please contact us via email.