Amethyst vs RescueTime

Amethyst is a free, open-source tiling window manager for macOS inspired by xmonad. It automatically arranges application windows into non-overlapping layouts using keyboard shortcuts, without requiring System Integrity Protection to be disabled. Amethyst supports multiple layout algorithms including tall, wide, fullscreen, and column layouts.

RescueTime is Automatic time tracking that runs in the background and measures productivity patterns.. It is available under a freemium model. This tool falls under the productivity category.