Split

Who It's For

Split is for users who pair two apps together for long stretches of focused work — an editor next to a browser, notes next to a terminal — and want to rebalance that pairing without re-snapping from scratch each time. Its one-time $4.99 price and lack of ads or analytics make it a good fit for anyone who wants a small, focused utility rather than a subscription-based suite.

How It Works

Split requires Accessibility access so it can identify, move, resize, focus, or close windows when you trigger those actions. You place a window three ways: set a preferred proportion and choose a menu action or shortcut (such as ⌃A for left placement) to place the focused window, drag a window into a snap zone and let go, or drag the white divider between two already-placed windows to resize both sides at once. Placing a single window doesn't automatically fill the opposite side — the shared divider appears once two windows form a connected layout, and the other side is arranged separately via the menu, a shortcut, or a drag. Within a side, Option–Tab cycles through that side's stacked windows; clicking the side's window count opens its switcher, and clicking the same count again brings the next window in the stack forward. After you repeat a pairing enough times, Split can suggest a familiar app to fill the empty side. Split stays out of the Dock, supports ten languages, and keeps the window and app metadata it uses for arranging and suggestions on your Mac.

Compared to Similar Tools

Compared to Rectangle (free, fixed positions) and Magnet ($5.99, fixed positions), Split's shared divider is the key difference — instead of snapping to a fixed grid position and staying there, a Split pairing can be resized live by dragging the divider, which keeps both windows in sync. Compared to BetterSnapTool ($2.99, custom snap areas), Split adds app pairing suggestions and Option–Tab stacking on top of shortcut- and drag-based placement, features not present in BetterSnapTool's zone-based approach. Split does not offer a custom zone editor like BentoBox or MacsyZones — its model is pairing and resizing two windows rather than designing arbitrary multi-zone layouts.

Requirements

• macOS 13 Ventura or later, on Apple silicon and Intel Macs
• Accessibility permission required
• $4.99 one-time purchase; license activates on one Mac at a time
• No SIP changes required

Getting Started

Buy Split from splitformac.com, download it, and grant Accessibility access when prompted. Set a preferred proportion and use a shortcut or menu action to place your first window, then arrange the second window the same way — via menu, shortcut, or drag — or drag a window into a snap zone directly. Once both sides are filled, drag the shared divider to resize the pairing. See splitformac.com for the full FAQ and support details.