Improved efficiency.
One task at a time.

The One Thing is a to-do list that shows you just one task — your current priority. No overwhelming lists, no decision fatigue. Just the next thing to do.

Free to use · iOS, Android & web · Syncs everywhere

The One Thing app showing a single task: Design a new landing page, with a green complete button

Long to-do lists don't get done. One thing does.

A list of 30 tasks forces you to make 30 decisions before you even start. Psychologists call it choice overload — and for many of us, especially those with ADHD or dyslexia, it turns into task paralysis: staring at the list, doing nothing.

The One Thing flips the model. You still keep a list, but the app only ever shows you the top task. Do it, complete it, and the next one appears. Momentum, not overwhelm.

Everything you need. Nothing you don't.

One task at a time

Your full list stays out of sight. The app shows only your current priority, so starting is simple and finishing feels inevitable.

Build momentum

Every completed task earns a celebration GIF, and a weekly momentum chart shows what you got done each day — one thing after another.

Works with your AI

The One Thing has MCP support: connect Claude or any MCP-compatible assistant and let it list, add and complete tasks for you.

Reward yourself

Attach personal rewards — a walk, a coffee — to completed tasks. Finishing something should feel good.

Dyslexia-friendly design

OpenDyslexic font support, generous spacing and minimal clutter. Built by a dyslexic developer who needed it himself.

Leaderboards & widgets

Daily, weekly and monthly leaderboards keep momentum up, and the iOS widget keeps your one thing on your home screen.

The app today

Adding a new task in The One Thing app
Capture tasks fast
The One Thing app showing a single task with a green complete button
Focus on one thing
The One Thing completed-task screen with a celebration GIF and a weekly momentum chart
Celebrate every win
The One Thing progress screen celebrating one task done today with a fun GIF
Watch progress build

Simple pricing

Free

£0

  • One task at a time view
  • Up to 10 active tasks
  • Complete unlimited tasks
  • Rewards & leaderboards
  • Dyslexia-friendly font & accessibility options
Start free

Frequently asked questions

What makes The One Thing different from other to-do list apps?

Most to-do apps show you your entire list, which can cause choice overload and task paralysis. The One Thing shows you a single task — your current priority — so you always know exactly what to do next. Everything else waits quietly in the background.

Is The One Thing good for people with ADHD or dyslexia?

Yes. The app was designed with neurodivergent users in mind. It reduces visual clutter to a single task, supports the OpenDyslexic font, and includes accessibility preferences you can toggle. Showing one task at a time helps reduce the overwhelm that long lists can trigger.

Is The One Thing free?

Yes — the free plan lets you keep up to 10 active tasks and complete as many as you like. One Thing Pro unlocks editing, reordering, move-to-top and home-screen widgets via a subscription.

What platforms does The One Thing support?

The One Thing is available on iOS (with a home-screen widget), Android, and as a web app, with your tasks synced across all of them.

Does The One Thing work with AI assistants?

Yes. The One Thing has an MCP (Model Context Protocol) server, so you can connect AI assistants like Claude to your task list. Your assistant can list, add and complete tasks on your behalf, protected by the same secure login as the app.

What's your one thing today?

Download The One Thing and find out how much you get done when you only look at one task.