Compare software

Dippi vs xScope: catalog facts
Dippi	xScope
Free Free and open source under GPL-3.0-or-later.	Paid Paid app with a free trial.
Linux	macOS
Calculates display DPI and aspect ratio from size and resolution Classifies density from very low DPI to ideal for HiDPI	Many measurement tools in one app Loupe with color copying and vision impairment simulation
Designed primarily for GNOME and Linux	macOS only, requires 12.3 or later Paid after the trial
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	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 October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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