Snap Mac windows with a shortcut or a drag, $1.99 once
Snap any window to halves, thirds or corners with a shortcut or a drag to the screen edge. Free, no account, no tracking. Pro is a one-time $1.99: custom positions, layouts that open your apps, window position at launch and a todo sidebar mode.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.