Comparison

Three Todo vs One & Three

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Three Todo

This task management app focuses on simplicity by presenting only three tasks at a time. It offers three actions: Done, Defer, or Drop, to help users manage their to-do list without added stress or complexity.

Highlights
  • Focus on 3 tasks at a time
  • Stress-free task management
  • Action tasks: Done, Defer, or Drop
  • Minimalist and non-intrusive design
  • Prioritizes tasks based on user actions
Features
Read full description

THREE: Made for procrastinators by procrastinators. The Refreshingly Simple Stress Free Todo List. THREE is designed to be a minimal task assistant that is non intrusive. Traditional todo lists add stress and complexity by making YOU track, categorize, and prioritize tasks. They're digital task masters that nag and confuse you until you give up in frustration. They punish you with incessant notifications when you're overdue on a task (which you would probably ignore anyways). THREE changes the way you manage tasks. Tasks go in. THREE will present you with three and only three tasks at any given time. As you deal with them, we'll keep track and tell you how you're doing. There are only three ways to action a task - Done, Defer, or Drop. When you are done with a task, it falls off your list. If you make a mistake - don't sweat it. Next time the task you entered erroneously appears in the list , just Drop it - we won't hold it against you. If you're looking at a task that you just don't want to deal with, Defer it. This tells us that a particular task is unpleasant and it gets prioritized lower. THREE isn't designed to keep you on top of every facet of your life. No meaningless trophies or achievements. Rather, THREE will slowly but surely change the course of your life and help point you in the right direction by keeping track of the stuff that matters to you and presenting them to you in a manageable fashion. THREE: Made for procrastinators by procrastinators.

About

One & Three

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.

Highlights
  • 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
Read full description

Stay focused. Feel accomplished. One & Three is a radically simple to-do list app designed to work with your brain—not against it. Whether you’re neurodivergent, easily distracted, or just overwhelmed by endless lists, this app helps you focus on what really matters. How it works: • Choose One main task for the day • Add up to Three supporting tasks • That’s it—no complicated folders, categories, or endless scrolling This structure helps reduce decision fatigue and fight off the “too much to do” spiral. Built with ADHD brains in mind: • Minimal, calming design • Quick entry with no distractions • Simple gestures and intuitive flow We believe productivity doesn’t have to be overwhelming. One & Three is a small app with a big heart—designed to help you get through the day, one task at a time. Support the developer: One & Three will always be free. If you’d like to support the app, you can make a one-time purchase in the app to keep it going and to support the developer.

Screenshots

Three Todo4 screens
One & Three4 screens

Verdict

The call

The clearest difference is price: One & Three at Free against Three Todo's $0.99. One & Three also leads on update cadence (daily vs every 12 months). Three Todo's advantage is in-app purchases (none vs 4) and chart position (#194 vs unranked). On rating, review sentiment, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

One & Three is free to download; Three Todo costs $0.99 up front. One & Three sells 4 one-off in-app purchases. Three Todo asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Three Todo against 5.0 for One & Three. Both are backed by a comparable volume of ratings — 16 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Three Todo ships an update every 12 months, One & Three daily. The most recent releases landed on July 29, 2026 and June 1, 2026 respectively.

Scorecard6 real differences · 5 level
Three Todo versus One & Three: the parameters behind the verdict, then further details
ParameterThree TodoOne & Three
Price$0.99Free — better
Rating4.9 (16 ratings)5.0 (5 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings16 — better5
Update frequencyEvery 12 monthsDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#194 — better—
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS17.617.6
Further details — not scored
Size9 MB4 MB
Age rating9+4+
DeveloperJeffrey LaiScott Curry

Customer experience

Three Todo

All ratings16 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

One & Three

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Three Todo

No in-app purchases

4 purchases

One & Three

One-time4
  • Small$1.99
  • Medium$4.99
  • Large$9.99
Show 1 more
  • Extra-Large$24.99

Questions

Is Three Todo free?
Three Todo costs $0.99, with no in-app purchases.
Is One & Three free?
One & Three is free to download, with in-app purchases available.
Which has better reviews, Three Todo or One & Three?
One & Three is rated higher. Three Todo averages 4.9 out of 5 from 16 ratings, while One & Three averages 5.0 from 5 ratings.
Do Three Todo or One & Three have ads?
Neither Three Todo nor One & Three shows ads.
Which is updated more often, Three Todo or One & Three?
Three Todo ships an update every 12 months, and One & Three daily. Most recently, Three Todo was updated on July 29, 2026 and One & Three on June 1, 2026.

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