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Phantasmic is system menubar application that monitors the temperature sensors of your Mac computer and optionally allows you to control the system fan(s).

What's New

Version 1.1.0:


  • Added graphs for 'fan rpm vs time' and 'sensor temperature vs time'.
  • Added Help button to each window.
  • Regrouped menu commands.
  • Added menu commands for opening/closing all windows.
  • Show the main window automatically when first running a new version.
  • Option to display temperature in degrees F (default is degrees


  • macOS 10.13 or later

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Phantasmic User Discussion


Current Version (1.x)


Downloads 124
Version Downloads 46
License Demo
Date 19 Apr 2018
Platform Intel 64 / OS X
Price Free
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