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Magnet vs Mosaic: catalog facts
Magnet	Mosaic
Paid Sold through the Mac App Store with free updates.	Paid From £14.99, with a free 7-day trial.
macOS	macOS
Drag-to-edge snapping as well as keyboard shortcuts Halves, thirds, quarters and full screen layouts	Drag-and-drop layout panel Custom layouts with gutters and groups
Mac only Only available through the Mac App Store	Paid after a 7-day trial macOS only
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
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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