SizeUp review (2026): is it worth paying for?
Keyboard-driven window resizing for the Mac
Black Friday: is there a SizeUp sale?
SizeUp report card
Fair · out of 4.0 · graded Nov 12, 2026
Best for keyboard shortcuts for window sizes
SizeUp moves and resizes Mac windows with keyboard shortcuts or a menu bar icon, for $12.99, with an unlimited free trial. It's Mac only, and the page names nothing newer than macOS 14 Sonoma.
Who SizeUp is for
- Fits if you'd rather resize windows from the keyboard on a Mac
- Works for people with several monitors and Spaces
Who SizeUp is not for
- Not for you if you're not on a Mac, as no other system is listed
- Watch out: the page doesn't name any macOS release newer than Sonoma
- Skip it if you want drag-to-snap layouts, because it's keyboard-led
- Watch out: the free trial has no stated end, so the page doesn't say what it limits
Why SizeUp gets a 2.4
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- BValue for money$12.99 per license, below the $16 middle of one-time prices in this category, with a 60-day money-back guarantee.
- BFree plan and trialAn unlimited free trial, per the product page, though it's a trial and not a free plan.
- BFeaturesHalves, quarters, multi-monitor and Spaces, SnapBack, margins, AppleScript and global shortcuts. Nothing in the listing shows a gap in the core job.
- CEase of useNo store rating on record. It's driven by shortcuts you have to learn.
- DPlatforms and integrationsMac only, from Mac OS X 10.6 through macOS 14 Sonoma.
What these grades rest on. Graded from this listing, whose facts were read from Irradiated Software's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/sizeup#review"><img src="https://toolgpa.com/badge/sizeup.svg" alt="SizeUp: 2.4 GPA on ToolGPA" width="196" height="56"></a>Where SizeUp stands among window managers and launchers
SizeUp's GPA of 2.4 is higher than 7 of the 28 other window managers and launchers we grade, and level with 6.
It stands best on features (B, above 20 of 28) and worst on platforms and integrations (D, above 0).
Each grade against the category
Every bar is all 29 window managers and launchers we grade, cut by the letter each got. SizeUp’s own letter is outlined.
- BValue for moneyAbove 3 of 28, level with 6
- BFree plan and trialAbove 9 of 28, level with 6
- BFeaturesAbove 20 of 28, level with 7
- CEase of useAbove 3 of 28, level with 13
- DPlatforms and integrationsAbove 0 of 28, level with 22
Keep SizeUp, or make your own?
Keep it
To replace SizeUp you would be making control over other apps' windows. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 15 of the 28 other window managers and launchers grade higher.
What you could not
- Control over other apps' windows.
- A native app living in the menu bar.
- A real app for macOS. Something home-made would be a web page.
- The depth: we grade its features B, which means it covers the whole job.
What this rests on. SizeUp’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is SizeUp?
SizeUp resizes and positions the frontmost Mac window through global keyboard shortcuts or a menu bar icon. Actions cover halves, quarters, full screen, moving between displays and Spaces, and restoring a window's earlier size. It also accepts AppleScript for custom actions.
Worth knowing
- Mac only; the page says it is compatible with Mac OS X 10.6 and later, including macOS 14 Sonoma.
- The page does not name any newer macOS release than Sonoma.
Key features
- Split and quarter actions
- Fill the left, right, top or bottom half, or a quarter, of the screen with the frontmost window.
- Multi-monitor and Spaces
- Move a window to another monitor, optionally resizing it, or to another Space.
- SnapBack
- Restores a window to the size and position it had before SizeUp changed it.
- Margins
- Reserve space at screen edges or add gaps between windows.
- AppleScript
- Build custom actions such as thirds or anchoring a window to an edge.
- Global shortcuts
- Trigger every action from configurable keyboard shortcuts in any app.
SizeUp pricing
As of Nov 12, 2026, SizeUp is a paid product with a free trial, starting at $12.99.
- Starts at
- $12.99
- Free plan
- None
- Free trial
- Unlimited free trial, per the product page.
| Plan | Price | What you get |
|---|---|---|
| SizeUp | $12.99per license | Includes a 60-day money-back guarantee. |
Read from irradiatedsoftware.com on Nov 12, 2026. Prices change, so confirm with SizeUp before you buy.
SizeUp alternatives
- SizeUp vs Magnet
From $4.99 one-time
- SizeUp vs Moom
Free trial · from $15 one-time
- SizeUp vs Divvy
Free trial · from $13.99
Common questions
Does SizeUp have an Android app?
No Android app was listed when its pages were read on Nov 12, 2026. SizeUp is listed for macOS.
Does SizeUp have an iPhone app?
No iPhone app was listed when its pages were read on Nov 12, 2026. SizeUp is listed for macOS.
Is SizeUp open source?
SizeUp is not described as open source on its own site, as read on Nov 12, 2026.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 12, 2026.