Aion

Aion is a menu-bar utility that automatically quits apps you are no longer using. You can set different timeouts and protection rules for individual apps, keep essential apps open, and use Focus Modes to change cleanup behavior for work, meetings, or personal time.

Before quitting an app, Aion checks for ongoing activity such as downloads, playback, calls, and microphone or camera use. Local scripts and agents can also temporarily protect apps they are working with. Aion first uses standard macOS quit flows, allowing apps to show unsaved-work prompts. An optional Helper Force Quit setting attempts additional cleanup after standard quit timeouts.

App monitoring and rule decisions run locally on your Mac without uploading app activity data. Aion also provides live resource insights and supports syncing settings across devices through iCloud.