A Magnet alternative that lets you build your own layout

Magnet snaps windows to fixed halves, thirds, and quarters. Screen Divider lets you design the grid yourself — and merge any block of cells into a single zone — then drag windows into it.

What Magnet does well

Magnet is a popular $9.99 window manager on the Mac App Store. It snaps the active window to screen edges and corners using keyboard shortcuts or by dragging a window to the edge, and it supports multiple monitors. If you want quick, reliable halves and quarters driven by the keyboard, it is a solid choice.

Where Screen Divider is different

Screen Divider is built around custom zones instead of fixed presets. You open a visual editor, split the screen into halves or thirds as finely as you like, and then merge any adjacent cells into one zone — a top three-quarters, a wide center, a tall sidebar. When you drag a window toward a zone, an overlay shows where it will land, and releasing snaps and resizes it to fit.

That merge step is the real difference. A layout like "top three-quarters plus a short bottom bar" isn't a preset in most snappers; in Screen Divider you build it once and snap to it every time.

Which should you choose?

If you mostly want keyboard-driven halves and quarters and prefer installing from the App Store, Magnet is great and we won't pretend otherwise. If you want zones beyond the presets — merged rectangles and asymmetric layouts you snap into by dragging — Screen Divider is built for exactly that.

FAQ