Compare software

spacedesk vs Duet Display: catalog facts
spacedesk	Duet Display
Free Offered as free display extension software.	Paid Paid app with plans listed on the pricing page.
Windows, macOS, Android, iOS, Web	Windows, macOS, Android, iOS
Works over USB, Wi-Fi or LAN Viewers for Android, iOS, Windows and any HTML5 browser	Uses tablets and phones as extra monitors Drawing tablet mode for illustration
Primary machine is mainly Windows Wireless performance depends on the local network	Paid, with features split across plans Requires an account
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account 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.