When I finally upgraded to a 32-inch 4K monitor, I thought my productivity would skyrocket simply because I had more screen real estate. Instead, I was dealing with floating windows. Sure, macOS comes with native split-view and Stage Manager, but on a screen this size, just snapping two windows side-by-side feels like a waste of space.

I needed thirds, quarters, and sixths — and I needed to trigger them without touching my mouse. That’s when I found Rectangle. It’s a tiny, free utility that gives macOS the window management superpowers Apple forgot to include.

The 32-inch factor

Issue with macOS native tiling

When you are working on a 13-inch MacBook Air, splitting the screen in half makes perfect sense. You get two focused windows that are legible and usable. But the same logic doesn’t apply to my 32-inch 4K monitor, and that’s where the native window management falls apart.

This is why Rectangle’s support for Thirds is a non-negotiable feature for me. On a large canvas, the golden ratio of productivity isn’t two windows; it’s three. With a quick shortcut, I can snap Slack to the left third, my research browser to the center third, and my draft in the right third.

It is the perfect width for reading and writing. macOS simply doesn’t let you do this easily.

When you use the native tiling features in macOS (especially with the newer updates), the system insists on leaving a little gap between the windows, or a margin around the edges, so you can still see a sliver of your beautiful wallpaper.

It’s aesthetically pleasing, sure, but it drives me up the wall. Rectangle respects the pixels. When I snap a window to the right, it slams flush against the bezel. There are no gaps, no wasted margins, and no breathing room.

It creates a seamless wall of information. It might sound like a minor gripe, but when you are managing dozens of windows a day, those wasted stripes of screen real estate add up to inefficiency.

A range of customization options to choose from

A major productivity boost

My problem with most utility apps is that they force you to learn their system. Rectangle is different because it bends entirely to my muscle memory. It’s not just about snapping windows; it’s about astute control.

Aside from Thirds, Rectangle even lets me slice my apps into Fourths (quarters) and Sixths. I can snap my code editor to the ‘First Two-Thirds’ of the screen and stack two reference windows in the remaining vertical strips.

It turns my single monitor into a complex multi-monitor array without the bezel gaps. I can build a customized layout that fits my specific project.

Rectangle also lets me remap every single action. I set my ‘Center Half’ command to a hyper-key combination that feels natural to me, and I completely disabled the shortcuts I never use to avoid accidental triggers. It’s not about learning Rectangle’s shortcuts; it’s about teaching Rectangle mine.

I’m particular about how my desktop feels. With Rectangle, there is even an option for a gap between my windows (I don’t prefer it, but I’m glad there is such an option available under Settings). I even enabled the options to ignore specific apps that don’t play nice with resizing.

Plus, for that extra bit of confirmation, you can tweak how the snap feels by adding that subtle haptic feedback.

An open-source solution

Free and transparent

Rectangle is open-source, which means the code is publicly available on GitHub for anyone to inspect. There is no hidden agenda, tracking scripts running in the background, and freemium paywalls locking basic features.

For a utility that requires accessibility permissions to control my windows, that transparency is a must-have. I trust it because the community can see exactly how it works.

There is a paid version called Rectangle Pro, and honestly, the developer deserves every penny for it. It adds fancy features like custom workspace layouts and more. But here is the truth: The free version is already overkill for 99% of users.

The free version doesn’t feel like a Lite product; it feels like the full product. It includes the entire suite of keyboard shortcuts, the thirds/sixths layouts, the gap customization, and the snapping mechanics. I’m not hitting a paywall every time I try to center a window or resize a browser.

The Pro features are focused on mouse-heavy gestures and automation.

Tiny, free, and essential

Overall, upgrading your hardware is only half the story; you need relevant software as well. Rectangle didn’t just organize my Windows — it reclaimed the wasted seconds I spent dragging and resizing. It turned my 32-inch monitor into the productivity powerhouse I intended it to be.

After using it for a few weeks, those keyboard shortcuts have become muscle memory to the point where using a Mac without Rectangle feels broken.