Download Habit 2.1.25

    Note: This page is for downloading Habit 2.1.x (several years old), for labs that have ongoing experiments and need to continue using the older version. It ran on macOS 10.6.8 (Snow Leopard) up to 10.11 (El Capitan). For new experiments, and for new users, we recommend the latest version of Habit2 - download here.