Help for macOS
Koffein support.
Practical help with keep-awake sessions, profiles, display behaviour and launch at login.
Contact
Tell us your macOS and Koffein versions, which profile you selected, what you expected and what happened. Do not send passwords, activation codes or other credentials.
Mac awake, display asleep
Choose a profile that allows display sleep when a download, render or other background job should continue without keeping the screen lit. Koffein prevents idle system sleep while macOS remains free to start the screen saver, lock the screen or turn the display off.
Closing a MacBook lid, choosing Sleep, a critically low battery and other system-required sleep events still take precedence.
Keep the display on
Choose a profile with Screen stays on for presentations, monitoring or any session where both the Mac and display must remain awake. Stop the session from the menu or let its timer finish to restore normal sleep behaviour.
Profiles and durations
Open Settings to add, rename, edit or remove custom profiles. Each profile has its own duration and screen behaviour. Built-in defaults can be restored from Settings.
Launch at login
Launch at login opens Koffein when you sign in. It does not automatically start a keep-awake session; choose a profile when you need one.
Privacy
Koffein has no account, analytics or advertising. Read the full Koffein privacy policy.