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)