CNC Model Viewer

CNC Model Viewer is a professional 3D CAD viewer for engineers, machinists, and designers. It is highly optimized for iOS and capable of handling massive assemblies at a consistent 120fps. OPEN ANY CAD FILE • Supports STEP, IGES, STL, OBJ, glTF, GLB, PLY, VRML, and BREP formats • Import files from the Files app, email, or drag and drop • Browse and organize imported models with the built-in file explorer MEASURE & INSPECT • Select faces and edges to measure diameters, distances, angles, lengths, and other dimensions • Apple Pencil support on iPad with hover previews in Measurement Mode for precise target selection before tapping • See live measurement previews while hovering, including feature highlights and measurement guide lines • Quickly inspect edges, faces, holes, countersinks, counterbores, and other circular features • Toggle between millimeters and inches • Navigate assembly hierarchies with the part tree view MATERIALS & WEIGHT • Built-in Material Library for assigning materials to parts • Calculate model weight based on the selected material • Assign materials per component to accurately calculate total weight for multi-material assemblies CUSTOMIZE YOUR VIEW • Wireframe, shaded, and edge display modes • Customizable part, edge, and background colors • Dark mode support • Capture and share model screenshots FULLY OFFLINE • No account required • No internet connection needed • All processing happens on your device • Your files stay on your device