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iStatistica vs Mac Performance Monitor: catalog facts
iStatistica	Mac Performance Monitor
Paid Paid app, with a download available from the developer's site.	Free Free and open source.
macOS	macOS
Menu bar monitors and Notification Center widgets Alerts that can run a command or workflow	Recorded history to find when a slowdown began Compare process traces on one timeline
macOS only Sensor and fan data require a separate plugin	Apple silicon only Requires macOS 15 or later
Downloadable app	Downloadable app
Closed source	Open 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 October 2, 2026

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