macOS 15+
Shake your windowsinto place.
Press a key, and the window you are in snaps to a half, a quarter, a third or a sixth of the screen. Press it again and it steps to the next size. Arrange a whole desk once and one key brings it back, opening the apps that are not running. Change your mind and Snap Back puts everything exactly where it was.
14-day trial, everything on, no account. Direct download, not the Mac App Store.
Drawing board·1 displayRunning
Press⌃⌥⌘←or tap below
⌃⌥⌘ and an arrow for a half, ⌃⌥⇧ and an arrow for a quarter: the keys the app uses. Click the board first and the bare arrows work too. Press the same one twice for two thirds.
Placements
Every place a window can go, and the keys that send it there.
Familiar shortcuts come built in, so nothing changes if your hands already know them, and every row can be recorded to whatever you like.
Halves 4
Quarters 4
Thirds 5
Sixths 6
Whole screen 3
Size, displays, history 6
Sixths and Almost Maximize sit in the menu with no shortcut until you give them one. Press a half or a third again and the window steps 1/2, 2/3, 1/3.
Layouts
One key opens the apps and puts them in their panes.
Arrange your windows once and capture it. A layout remembers which app goes in which pane, on which display, and it comes back with a shortcut, from the menu, or on its own the moment you plug in the monitor it was made for. Nothing has to be running first.
- An app that is not running is opened for you, then placed the moment its window appears. A slow app is waited for, not skipped.
- Capture saves every visible window, one pane each.
- Type the columns as fractions (“40, 30, 30”), split a pane, drag a shared edge.
- A layout for the desk at work and one for the laptop alone, each applied when that set of displays connects.
Layouts·3 running
Starting pointWindows already open
Three windows, wherever they landed.
Layouts·Nothing running
Starting pointNothing open at all
Nothing is running. The screen is empty.
The same key on both desks⌃⌥⌘1
Snap Back
Nothing you do is a commitment.
Every move Sizemac makes remembers where the window came from. Snap Back puts it there, pixel for pixel, whether you moved it a second ago or applied a whole layout.
- Throw a window to the next display and it keeps its relative size and place.
- Gaps between tiles are zero by default. One slider adds air to every tile at once.
Today
The Tremor Log: every move, by app and display. Kept thirty days on your Mac and nowhere else.
The rest of it
What else it does
RefusalsSays when it cannot
Some apps refuse to be moved. The Tremor Log names the app that said no and why, instead of the shortcut quietly doing nothing.
PrivacyWhat leaves the Mac
By default, two things: the license check, and the daily update check (switch it off in Settings). Everything else stays on this Mac, as readable files in Application Support. No account, no analytics, no telemetry.
Menu barIn the Dock, or only up top
A seismograph in the menu bar with every placement and its shortcut, and a Dock icon like any app. Turn the Dock icon off and Sizemac lives in the menu bar alone. Hide that too and the shortcuts keep working.
Pricing
Buy it once.
A license covers every Mac signed in to your Apple Account. No subscription, and no account with us.
- Every Mac signed in to your Apple Account
- Yours to keep: the version you buy keeps working
- 14 days free first, everything on, nothing to sign up for
- 14-day refund, no questions
Questions
What does $9 include?
Sizemac on every Mac signed in to your Apple Account, with 2 years of free updates from the day you buy. After those 2 years it keeps working on the last version released within them. There is no subscription.
What happens after the trial?
After 14 days, shortcuts and layouts pause until you enter a license key. Nothing you set up is lost.
I already use another window manager.
Bring your shortcuts from the app you use now: Sizemac starts with the most common set, and another common set is one click away. It notices when another window manager is running and offers to quit it, so two apps never fight over one window.
Why not the Mac App Store?
Moving another app’s windows needs the Accessibility permission, which the App Store sandbox does not allow. Sizemac is signed and notarized by Apple, and it updates itself.
Which Macs does it run on?
Any Mac running macOS 15 or later.