Every morning, write it down. At night, mark it done. That's the whole app. No lists, no projects, no notifications nagging you. Just one thing that matters, kept quietly for as long as you need.
Long lists. Open loops. Eleven things in five categories with three priority levels and four colored tags. You finish the day having "done a lot" but you can't quite remember if you did the thing that actually mattered.
One Thing is built on the opposite idea: you'll do one important thing today. Maybe more, but at minimum, one. Decide what it is in the morning, when you're clear. Honor it at night, when you're tired.
That's the entire premise. The app is a single screen. There is no "Pro plan" hiding the good features. The free version is the product, complete, forever — because a daily-use app is only worth anything if you use it every day, and you only use it every day if it's beautiful and unobtrusive.
The paid tier, One Thing Plus, exists for the small handful of things that cost real money to run — syncing your entries across devices, keeping a searchable archive forever, and supporting an indie maker who'd like to keep the lights on.
When you open the app, you see one cursor blinking. Write what matters today. 140 characters or less. No tags, no categories.
A gentle reminder at 8am and 8pm if you want one. Otherwise, the app is silent. It's not trying to win your attention back.
Mark it done — or don't. Either way, it joins the quiet archive of what you've done. Patterns emerge over months.
Free has everything you need to use One Thing every day. Plus is for the few people who want it on more devices or want to support the work.