STEP File Viewer
STEP File Viewer is a lightweight tool built for viewing .step and .stp files across macOS, iPad, and iPhone. Visualize STEP models from every angle with projected, section, and exploded views—even on your iPhone.
DOMAIN INSIGHT
The STEP format (ISO 10303)
STEP is a promise of precision wrapped in a plain text shell. A neutral CAD format born to keep geometry honest across software borders. It carries solids, surfaces, assemblies—clean, structured, and painfully strict. No flair, no shortcuts, just geometry described the way engineers wish the world behaved. It isn’t perfect. Files get heavy, exporters cut corners, and interpretations drift. But when you need 3D data that survives the jump from one system to another, STEP is still the steady, quietly reliable workhorse everyone ends up trusting.
CORE FEATURES
DESIGNED FOR
QUESTIONS
Can STEP File Viewer open STEP files on an iPhone?
Yes. It is built for viewing .step and .stp files across macOS, iPad, and iPhone, including projected, section, and exploded views on iPhone.
Does it support assemblies?
It parses and loads STEP models as assemblies, provided the model itself includes assembly data, and components can be exploded to inspect each part in expanded space.
What export options are available?
Models can be saved as STL, OBJ, glTF, GLB, or USDZ, and projected views — top, front, and right — can be exported in SVG.
What is the STEP format?
STEP is a neutral CAD exchange format defined by ISO 10303. It carries solids, surfaces, and assemblies in a plain-text structure so 3D data survives the jump between different CAD systems.
