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Sensei vs Fanny: catalog facts
Sensei	Fanny
Freemium Free download, with a paid version available to buy.	Free Free to download.
macOS	macOS
Real-time CPU, GPU and battery stats in the menu bar Customizable widgets and dashboards	Current, target, minimum and maximum speed for each fan CPU and GPU temperature at a glance
macOS only Some features require a paid purchase	Monitoring only, no fan control Narrow scope compared with full system monitors
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 1, 2026

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