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