quitter

Install command: 
brew install --cask quitter

Name: Quitter

Automatically hides or quits apps after periods of inactivity

https://marco.org/apps#quitter

Cask JSON API: /api/cask/quitter.json

Cask code: quitter.rb on GitHub

Current version: 1.0

Current version requires: macOS >= 10.11

Analytics:

Installs (30 days)
quitter 23
Installs (90 days)
quitter 63
Installs (365 days)
quitter 269
Fork me on GitHub