Stickytray

Stickytray is a menu bar app for macOS 14 and later that keeps sticky notes floating above all windows, on every Space and over full-screen apps. Press ⌃⌥N to open a note at the pointer, ⌃⌥C to turn selected text into a note, and ⌃⌥H to hide or show every note at once. Checklists sync both ways with Reminders, and notes sync between your Macs through your own iCloud. Notes are hidden from screen sharing in most apps, with a built-in Privacy Check. No account, no tracking. Pay once, use it on up to 3 Macs.