Just One Thing

One task. Apps blocked until it's done.

No AI cameras. No judgment. Just a commitment device that works.

Download on the
App Store
Just One Thing app main screen

How it works

01

Set your task.

Free-form text. No curated lists, no categories. Just type what needs doing.

02

Block your apps.

Choose which apps to lock — individual apps or whole categories. Your selection is saved for next time.

03

Start.

Blocking activates via iOS Screen Time. A lock screen widget shows your active task. Your apps unlock the moment you mark it done.


Why it works

System-level blocking.

Uses iOS Screen Time API. Not a custom overlay — apps actually go dark.

No verification theater.

No AI photo check. No judgment. Trust-based completion.

Track what matters.

Streak and total focus time. Two numbers. Always visible.

Widgets.

Lock screen and home screen. Your task is always visible. Mark done in one tap.