Caffeine Session · macOS 13+
Keep your Mac awake on demand
Choose a duration and options, then start, pause, or stop from the menu bar.
Preparing for Mac App Store release
Start, pause, and finish
Open the main window from the menu bar, choose options and duration in the session tab, then Start. Pause releases sleep prevention; Resume continues with the selected options. Stop or expiry ends the session while the app stays open. Closing the window retains the menu bar app.
Options for your work
Use the presentation preset to keep the display on, or a download/rendering preset that lets the display sleep while preventing automatic system sleep. The app does not detect download or rendering completion. Security locking, explicit sleep commands, lid closure, and insufficient power remain controlled by macOS.
When automation does not restart
New rules work only after you enable them. All selected conditions must match; higher priority takes precedence. Manual Stop suppresses currently matching conditions. Automation can restart after conditions end and match again, or when you explicitly allow it again.
App Store and Direct editions
Caffeine Session provides automatic-sleep prevention, presets, automation, and a local 3D diagram. Measured temperatures, fan RPM, fan control, lid-closed control, and gamma dimming are not included in the App Store edition. Direct-edition sensors, fans, and external-display brightness depend on hardware and permissions.