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Bob vs Viz: catalog facts
Bob	Viz
Freemium Distributed through the Mac App Store; check the store for current pricing.	Free Free to download; the developer accepts GitHub Sponsors donations.
macOS	macOS
Translates selected text, screenshots and typed input Over 30 translation services, usable side by side	Extracts text from both images and videos Reads QR codes and barcodes
macOS only Documentation and site are mainly in Chinese	macOS only Little documentation on the product page
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it 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.