Three Todo vs Doo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Doo
This app helps you overcome procrastination by breaking down tasks into manageable digital cards. Its unique card-based interface and focus on one task at a time promote productivity and habit building. It offers various task types, scheduling options, and cross-device syncing.
- Card-based task interface
- Customizable task groups
- Open-ended, calendar, and location-based tasks
- Share extension for creating tasks from other apps
- Customizable task scheduling and alerts
- iCloud sync across devices
- Task collaboration
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Become a more productive you, one card at a time. WHY DOO? It’s easy to procrastinate your to-do list without a clear first step. Tasks with large goals can feel impossible to finish. Doo helps you procrastinate less. Your reminders become cards that are easy to start and easy to finish. The streamlined edit screen encourages you to create tasks that can fit on a digital index card. Each card shows up in a stack — instead of a list — so you can focus on one thing at a time. BUILD BETTER HABITS Pick a few tasks each day and snooze the rest. Doo helps you create more consistent, sustainable habits. Reduce your anxiety and become a more productive you, one card at a time. *** 2021 Webby Award Nominee *** Best App - Work & Productivity *** 2021 Webby Award Honoree *** Best App User Interface REVIEWS “I absolutely love this app... *incredibly* satisfying...” – Doo 2 Review, Buzzfeed “There’s just enough guilt involved in hitting snooze that I often just complete the task. That’s the point." – WIRED “Doo is a beautiful way to get things done without stressing yourself out.” – Doo 2 Review, The Next Web FEATURE HIGHLIGHTS • Be more productive with a unique, card-based interface • Separate cards into custom groups • Create open-ended, calendar, or location-based tasks • Create tasks within other apps with the share extension • Schedule tasks with custom intervals and alerts • Sync with iCloud across iOS and Mac devices • Collaborate on tasks with other Doo users (requires iCloud) • Support for VoiceOver, Dynamic Text, and keyboard shortcuts • Stay on task with Home Screen & Lock Screen widgets • Complete or snooze tasks from notifications • Drag and drop text, locations, and URLs to create tasks • Screen lock with FaceID, TouchID, or passphrase • Create and complete reminders with Siri • Multitask with Split View and Slide Over
Screenshots
Verdict
The clearest difference is review sentiment: Three Todo at 100% against Doo's 55%. Three Todo also leads on rating (4.9 vs 4.4) and price ($0.99 vs $4.99). Doo's advantage is update cadence (every 2 weeks vs every 12 months) and chart position (#57 vs unranked). On ratings volume, ads, in-app purchases and monetization model 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
Three Todo costs $0.99 and Doo $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Three Todo holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 16 and 39 respectively. Written reviews point the same way: 100% of Three Todo's written reviews are positive against 55% of Doo's.
Three Todo ships an update every 12 months, Doo every 2 weeks. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.
| Parameter | Three Todo | Doo |
|---|---|---|
| Price | $0.99 — better | $4.99 |
| Rating | 4.9 (16 ratings) — better | 4.4 (39 ratings) |
| Positive reviews | 100.0% of reviews — better | 55.2% of reviews |
| Number of ratings | 16 | 39 — better |
| Update frequency | Every 12 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #57 — better |
| Devices | iPhone, Apple Watch | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.6 | 17.6 |
| Further details — not scored | ||
| Size | 9 MB | 17 MB |
| Age rating | 9+ | 4+ |
| Developer | Jeffrey Lai | Ciarlo Software, LLC |
Customer experience
Three Todo
Doo
In-app purchases
Three Todo
No in-app purchases
Doo
No in-app purchases









