Fanny
Fanny is a free system monitoring utility for macOS that displays your Mac's fan speeds and CPU/GPU temperatures in the menu bar and Notification Center. It is designed as a lightweight, unobtrusive widget that lets you keep an eye on thermal performance and fan behaviour without cluttering the desktop. Users rely on it to monitor whether their system is running hot under load, to diagnose thermal issues, or simply to stay aware of their Mac's cooling activity while working. The app is particularly popular among power users and developers who need to track performance during intensive tasks.
Suggested Replacements
1 suggestionFanny is an older, abandoned project with its last major release over a decade ago and no confirmed native Apple Silicon support. A Reddit post from early 2022 shows users encountering issues running it on M1 Macs, and there is no evidence of ongoing development to address Apple Silicon compatibility. For native monitoring on M-series Macs, consider Macs Fan Control, which is actively maintained, runs natively on Apple Silicon, and offers similar or superior fan speed and temperature monitoring in the menu bar with a clean, modern interface. Alternatively, Monitorian is another actively maintained native option that provides comprehensive system monitoring including CPU/GPU temperature and fan speeds. Both are available for direct download and work reliably on M1, M2, M3 and newer Macs without Rosetta emulation.
Native version · Reported by in the community.
Sighting data is community-sourced — version availability and pricing should be verified with the developer.
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