Open up your Notes app right now and show us what’s in there. “Absolutely not,” Alanna Lutch, 25, of Florida, says with a laugh. Fair response! We’re strangers, after all. If you want to get to know a ...

Your brain is drowning in tabs, notifications, and half-finished to-do lists. Yet the tool millions quietly rely on to actually get things done isn’t an app at all. It’s a tiny, colorful square: the ...