I’m Alistair Stead, and I make Spacetile. Kodehort Ltd, my company in England, sells it. Spacetile is a one-person product, so the code, the docs and the replies to support email all come from me.
The gap I wanted to fill
I used yabai for years. It’s the most capable tiler on the Mac, and it does tile the real Spaces. I also tried AeroSpace for a while. It switches fast, because it keeps workspaces of its own and parks hidden windows in a corner of the screen. Mission Control doesn’t know those workspaces exist. Both are free and open source, and plenty of people should keep using them.
What I really wanted was a tiler that arranged my windows automatically and stayed close to how the Mac already works, alongside macOS rather than instead of it. Spaces are how macOS already groups work: full-screen apps live between them, a Focus filter can point at them, and every display has its own. So Spacetile works inside those Spaces instead of replacing them, and tiles each window as it opens.
What Spacetile does
Spacetile gives each window its own tile on the Spaces you already have. ⌥1 to ⌥0 switch between them with no slide animation, and ⌥⇧1 to ⌥⇧0 send the focused window to another one. A Profile saves which apps go on which Space and brings that setup back from the menu bar, a shortcut, a Focus or a display you plug in. Turn on a Writing Focus and your editor and notes take their places; plug in a second display and each app moves to its Space. None of it needs any system settings changed. It needs a Mac with Apple silicon and macOS 26 or later.
There are things macOS doesn’t let it do, such as creating Spaces. The docs say where those limits are, What it takes to tile windows on a Mac explains why, and Spacetile compared sets it beside yabai, AeroSpace, Amethyst, Rectangle and others, row by row.
What it costs
A Licence costs £20 (about $27), one-time, includes VAT. It covers every version released in the 12 months after you buy, and the versions it covers keep working after that. If you’d rather never think about updates again, Lifetime supporter costs £40 and covers every future release. I chose a one-time price because so much software is sold by subscription now, and I didn’t want a window manager to become another monthly bill. The price is there to cover what it costs me to keep Spacetile working as macOS changes.
You don’t have to decide yet. Every install starts with a 14-day Trial with every feature on, and the download is a signed DMG.
Read the source
Spacetile asks for the Accessibility permission, which lets it move every window on your Mac. You should be able to check what it does with that. So the full source is on GitHub at Spacetile/Spacetile.app, and the docs show how to build it yourself. Spacetile is source-available, auditable, not open source: the Source licence lets anyone read the code, and using the app still needs a Licence after the Trial. The app never contacts me to check that Licence. It verifies the key on your Mac.
If something goes wrong in your 14 days, email support@spacetile.app and tell me what happened. A bug report from a Trial is the most useful email I get.