CAD Assistant for Android

Product summary

CAD Assistant, created by OPEN CASCADE, is a free application for inspecting 3D CAD and mesh models. It’s designed primarily as a viewer and lightweight conversion tool that helps you examine assemblies, isolate parts, and export models in supported formats.

Supported file formats

• JT
• OBJ
• PLY
• STL
• glTF
• STEP AP214
• STEP AP203
• IGES 5.3
• IGES 5.1
• BREP

Key capabilities

• View, convert, and export 3D models while preserving associated metadata.
• Navigate assemblies visually and hide or reveal individual components for focused inspection.
• Export the displayed model into any of the formats the app supports.

Viewing modes and input methods

• Meshes can be inspected in wireframe, shaded, and shrink (exploded) render modes.
• The interface is optimized for touch: models can be rotated, zoomed, and panned using finger gestures on touch-screen devices.

Limitations and usability notes

• Large files may open slowly.
• On smaller devices, the landscape layout can make details hard to read; the app is not ideal for small-screen use.

Who will benefit

Hobbyists and professionals who need a free, quick way to review and export a wide range of 3D file types will find CAD Assistant useful. It offers an intuitive inspection workflow, though for very large assemblies or small-screen work, alternatives may be preferable.

Suggested alternative

Consider JT Assistant (free) if you need a different viewer that emphasizes detailed JT model inspection and alternative performance characteristics.