One Thing

One Thing is a precision-built habit tracker designed for one purpose: to help you show up every day for the single habit that matters most.

Pick one habit. Mark it done. Keep the streak alive.

Why “one thing”?
Most habit apps try to do everything. This one helps you do one thing consistently.

What you can do
Create your habit in seconds
Stay on track daily with a simple Done button
Build a streak that’s easy to see and satisfying to maintain
See your history in a calendar view
Get reminders (optional) so you don’t miss a day
Home screen widgets to check your streak at a glance
Celebrate milestones as your streak grows
Switch habits when you’re ready, while keeping a record of past habits
Private by default
Your habit data stays on your device. No account required.

If you want, tell me whether you want the store listing to lean more minimal/industrial or more warm/motivational, and whether you want to mention Pro/subscription features explicitly.