Windows utility

Round out the sharp edges.

Roundly adds subtle, click-through corner overlays to make square monitor edges feel a little more at home with Windows 11.

Small on purpose

A visual fix, not another dashboard.

The overlays sit at the screen corners without blocking clicks, typing, or window focus.

Use the slider to match the curve to your physical display and desk setup.

Roundly lives in the notification area, opens when you need it, and stays out of the taskbar.

Version 2.0

Redesigned settings: a clearer Windows 11 layout with grouped sections for Corners, Displays, Fullscreen & capture, Presets, Startup and About.
Corner size is now clearly labelled, with a one-click Reset to default.
New: hide corners from screenshots and screen recordings.
New: Roundly Pro, a one-time purchase that adds colour and opacity, per-corner and per-display sizes, auto-hide in fullscreen apps, and presets you save and apply with one click.
Clearer startup options and a tidier About section.
Includes the Windows App SDK 2.5.1 stability and security update from 1.2.5.

Updated to Windows App SDK 2.5.1 for the latest stability, performance and security fixes.

The corner overlays are antialiased, so the curve no longer looks jagged or stepped.

The arc now runs out to the screen edge, instead of stopping on a straight black strip.

No telemetry. No network access. No input hooks. Just a tiny native Windows app for people who notice the corners.