That One Thing

One task. Complete focus. Real results.

Break free from endless to-do lists. That One Thing helps you focus on your single most important task each day. Perfect for ADHD minds and anyone who struggles with overwhelm—beautifully designed, surprisingly powerful, and completely free to start.

Download for free on the AppStore

Everything You Need to Focus

A powerful yet simple approach to productivity

Single Task Focus

Set one primary task as your active focus. Our minimalist interface eliminates distractions and decision fatigue—ideal for ADHD minds that work best with clear priorities.

Home Screen Widget

Keep your focus visible with beautiful widgets. Small and medium sizes that update in real-time.

Smart Daily Reminders

Set multiple gentle reminders throughout your day to help with time awareness. Automatically canceled when you complete your task.

Task Management

Create, edit, and reorder tasks with drag-and-drop. Mark complete with satisfying visual feedback.

Fully Accessible

Complete VoiceOver support, Dynamic Type, and Reduce Motion compatibility for everyone.

Multiple Languages

Available in English, German, and Finnish with more languages coming soon.

Unlock Premium Features

Personalize your focus experience

Custom Backgrounds

Choose from beautiful gradients or use your own photos with adjustable blur effects.

Font Customization

Select from 4 font families and 5 weights to match your style.

Advanced Styling

Customize colors, themes, and create a truly personal productivity space.

Unlimited Tasks

Create as many tasks as you need while maintaining focus with only one active task at a time.

Start focusing on what truly matters

Join thousands who have simplified their productivity with That One Thing. Free to download and use forever.

Download Now for Free