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Mosaic vs SizeUp: catalog facts
Mosaic	SizeUp
Paid From £14.99, with a free 7-day trial.	Paid $12.99 licence with an unlimited free trial.
macOS	macOS
Drag-and-drop layout panel Custom layouts with gutters and groups	Half and quarter screen actions from the keyboard Moves windows between multiple displays
Paid after a 7-day trial macOS only	Stated compatibility ends at macOS 14 Sonoma Mac only
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account 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.