One & Three

One & Three

Minimal ADHD to-do list app

5 ratings
3 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • April 22, 2025
  • April 25, 2025
One & Three screenshot #1 for iPhone
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One & Three screenshot #4 for iPhone
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About

This productivity app helps you focus on your most important tasks with a simple, minimalist design. It limits your daily focus to one main task and up to three supporting tasks, reducing overwhelm and decision fatigue.

Focus on one main task daily
Add up to three supporting tasks
Minimalist and calming design
Quick entry with no distractions
Simple gestures and intuitive flow
Reduces decision fatigue
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What's New in One & Three

1.1.1

April 25, 2025

We've updated some of the UI to create a better user experience. It also includes a few bug fixes.

4

In-App Purchases

$1.99

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User reviews

Simplistic & *Effective*

Respectfully, my brain is basically a bowl of spaghetti noodles, except it’s just one noodle that keeps going endlessly, tangling and never headed in any clear direction. This is the kind of checklist that helps me to simplify my own brain. What I love most is that it resets each day, and I don’t have to feel guilty if I didn’t achieve all my tasks from yesterday, very forgiving, very “new day, new me” every single day.

Thank you for this.

Love, an undiagnosed neurodivergent
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Productivity without the Overwhelm

I’m so grateful for this app! As a life-long to-do list lover, I feel like I’ve tried every way to stay productive — classic handwritten lists, complex apps focused on organizing tasks into groups with deadlines, etc. But ultimately, I end up looking at my lists and getting overwhelmed wondering how I can get everything done.

This simplistic approach is perfect for helping me prioritize tasks daily without getting bogged down and anxious about the future.
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Perfectly simple

This app is truly what it says it is - one and three. I love making lists that I often keep in multiple places and more often than not - lose - let alone get everything done. One & Three helps me to focus on just four tasks each day with a clean, crisp design and truly the easiest set up.

Response from developer

Thank you so much! This means the world to me.

Developer apps

FAQ

What is the main purpose of One & Three?

One & Three is designed to help users stay focused by limiting their daily tasks to one main item and up to three supporting items, reducing overwhelm and decision fatigue.

How does One & Three help users with ADHD?

The app features a minimalist, calming design, quick entry with no distractions, and an intuitive flow, all built to work with brains that are easily distracted or overwhelmed.

Is One & Three free to use?

Yes, One & Three is always free to use. Users can make a one-time purchase within the app to support the developer and keep the app running.

What devices is One & Three available on?

One & Three is available on iPhone and iPad devices.

How often is One & Three updated?

The app was last updated on April 25, 2025, with version 1.1.1, indicating recent development and support.

What is the age rating for One & Three?

One & Three has an age rating of 4+, making it suitable for a wide range of users.

Does One & Three have ads?

No, One & Three does not contain advertisements. The app is free and offers optional in-app purchases for support.

Can I export my tasks from One & Three?

The description does not specify an export functionality for tasks. The app focuses on a streamlined, in-app experience for daily task management.