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CAD Assistant vs eDrawings Viewer: catalog facts
CAD Assistant	eDrawings Viewer
Free Free for personal and commercial use.	Free The viewer is free; eDrawings Professional is a separate product.
macOS, Android	Windows, macOS, Android, iOS
Opens STEP, IGES and other CAD formats Converts between 3D formats	Free viewing of 3D models and 2D drawings Opens DWG and DXF files
Viewer and converter only, not a modelling tool Closed source despite being built on the open OCCT kernel	Viewing only; editing and publishing need other eDrawings products Proprietary software
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License: Proprietary
Not stated if an account is needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.