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iStat Menus vs Mac Performance Monitor: catalog facts
iStat Menus	Mac Performance Monitor
Paid Paid single or family license with upgrade pricing from version 6; also included in…	Free Free and open source.
macOS	macOS
Wide range of sensors and statistics in the menu bar Highly customisable menu bar items and menus	Recorded history to find when a slowdown began Compare process traces on one timeline
macOS only Weather data is included for six months with a license	Apple silicon only Requires macOS 15 or later
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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