The average person tries 3.7 productivity apps before settling on one — and that number comes from Zapier's 2022 State of Business Automation report, which surveyed over 2,000 knowledge workers. Most people don't quit because the apps are bad. They quit because the app's model of organizing work doesn't match how their brain actually works. A rigid project hierarchy feels like homework to someone who thinks in flowing daily lists. A plain checklist feels like chaos to someone managing 40 tasks across six clients.
This article cuts through the noise. It covers six apps in real depth — what each one genuinely does well, where it falls apart, and who should walk away from it — plus a section on what to look for before you commit to anything. No rankings padded for SEO, no affiliate-driven recommendations. Just an honest assessment of the tools that have earned their reputations.
What separates a useful to-do app from an expensive distraction
Before evaluating any specific app, it helps to know what the research actually says about task management systems. David Allen's Getting Things Done method, published in 2001, introduced a principle that holds up: your brain is terrible at storing tasks, but excellent at working through them. The friction in most to-do apps comes from the gap between capturing a task and trusting the system enough to act on it.
Three things determine whether an app closes that gap or widens it.
- Capture speed: If adding a task takes more than five seconds, you'll stop doing it mid-meeting and rely on memory — which defeats the point. Apps with natural language parsing ("Call Sarah Friday at 2pm" becomes a scheduled task automatically) win here. Todoist and Things 3 are the leaders.
- Review workflow: A list you never review becomes a graveyard. The best apps have a friction-free "today" or "upcoming" view that makes the daily review feel like checking in, not doing admin. Things 3's Today view and Todoist's built-in filters are built around this idea. Notion's task databases, by contrast, require you to build that view yourself, which most people never do properly.
- Trustworthiness: This is the one nobody talks about. You need to believe that the app will surface the right thing at the right time. That means reliable reminders, that doesn't eat your data, and a design stable enough that the company isn't going to pivot the product out from under you. Wunderlist users learned this the hard way when Microsoft acquired and shut it down in 2020.
One thing to treat with skepticism: feature count. ClickUp markets itself on having dozens of views and toggles. For a teams of any size or solo user, that breadth usually means a longer setup time, a steeper learning curve, and more ways to procrastinate by rearranging the system instead of doing the work.
Todoist: still the benchmark for most people
Todoist, built by Doist and launched in 2007, has roughly 30 million users as of the company's own reporting. That scale matters because it means the app has been stress-tested across nearly every workflow imaginable, and the edge cases are handled. The Android widget works. The browser extension captures pages without opening a new tab. The iOS share sheet actually functions.
The strongest thing Todoist does is natural language input. Type "Submit quarterly report every last Friday" and it creates a recurring task with the correct schedule. Type "Call dentist p1" and it sets the task to Priority 1. This sounds like a small thing until you've used an app that requires five clicks to set a due date and then you start forgetting to set due dates at all.
The free tier is genuinely usable — you get up to five projects and basic task management. Todoist's Karma system, which tracks your completion streaks, is either motivating or annoying depending on your personality. You can turn it off.
Where Todoist struggles: Note-taking. Each task gets a description field, but it's not rich text, and there's no place to store reference material alongside your tasks. If your workflow requires detailed notes attached to projects — specs, meeting notes, client briefs — you'll end up with Todoist open in one window and Notion or Obsidian open in another. That's a workable split but it's a real friction point.
Who should skip it: Anyone who does most of their work inside Google Workspace. Google Tasks integrates directly into Gmail and Calendar with zero setup, and for a workflow that's entirely email-driven, the native integration will matter more than Todoist's feature depth.
Things 3 by Cultured Code: the best app for Mac and iPhone users who think visually
Things 3 is a paid app — $9.99 for iPhone, $19.99 for iPad, $49.99 for Mac, no subscription — and it has won Apple Design Awards twice for a reason. The interface is the product. Everything is typeset cleanly, the animations are smooth without being showy, and the hierarchy of Areas → Projects → Tasks → Subtasks maps onto most real-world work without forcing you to learn a new vocabulary.
The Today view in Things 3 is genuinely the best implementation of the daily review concept in any to-do app. It shows your scheduled tasks for the day alongside an inbox where you can drag things in from your backlog. There's also an "Upcoming" view that shows the next two weeks in a calendar-style layout, which makes it easy to see if you've accidentally committed to 14 tasks on a Wednesday. That kind of immediate visual feedback prevents the planning fallacy from eating you alive.
Things 3 added a feature called Quick Entry with Autofill, which captures the current URL and page title from Safari and Chrome automatically when you add a task. For researchers, journalists, or anyone doing web-heavy work, this is genuinely useful — the task "Read this later" arrives with the link already embedded.
The limitation you have to accept: There is no web app. Things 3 is Apple-only, which means if you share tasks with anyone on Android or Windows, you're out. Collaboration is nonexistent — you can't assign a task to another person, full stop. The company has been clear that they consider this a feature, not a bug; they're building a personal task manager, not a team one. If you agree with that philosophy, you'll love it. If you need to delegate even occasionally, look elsewhere.
Things 3 also has no natural language date parsing as fluid as Todoist's. You can type a date, but you can't type "next Tuesday" and have it understood in the task name. It's a small gap that surfaces repeatedly in fast-capture situations.
Microsoft To Do and Google Tasks: the underrated defaults
Most productivity writing dismisses Microsoft To Do and Google Tasks as "too basic." That's wrong, and the dismissal usually comes from writers who don't actually use Microsoft 365 or Google Workspace all day. If you do, these apps deserve a real look.
Microsoft To Do replaced Wunderlist after Microsoft's 2015 acquisition, and it's free with any Microsoft account. The key feature is My Day — a daily planning view where you manually pull tasks in each morning from your various lists. Research by Microsoft's own Viva Insights team found that the act of intentionally selecting what to work on each morning correlates with higher task completion rates, and My Day operationalizes that habit with almost no friction. It also syncs with Outlook tasks bidirectionally, so flagged emails appear in your to-do list automatically. For anyone processing 80 emails a day in Outlook, this is worth more than a dozen Todoist features.
Google Tasks is even simpler — it lives inside Gmail and Google Calendar as a side panel, and tasks with due dates appear on your calendar grid. That calendar integration is its entire value proposition. If you schedule everything in Google Calendar and want tasks to show up in the same place without switching apps, Google Tasks does that and nothing else gets in the way.
The honest case against both: Neither app has meaningful filtering, label systems, or priority levels that affect how tasks surface. If you're managing 50+ tasks across multiple projects, you'll hit the ceiling fast. They're organizational tools for people with 10-20 active tasks, not 100. Know which situation you're in before you commit.
Notion and ClickUp: when you need tasks embedded in a broader system
Notion is not a to-do app. It's a workspace that can contain a to-do app, which is a meaningful distinction. If you build a task database in Notion correctly — with proper properties for due dates, status, priority, and project — it's genuinely powerful. You can filter by any combination of those properties, create linked views, and have your tasks live next to the documents and notes they relate to. That integration is the killer use case. A product manager who wants their sprint tasks, meeting notes, and product specs in one database, all interlinked, will find Notion compelling in a way that Todoist can't match.
The problem is the setup cost. Most people who use Notion for tasks either adopt someone else's template (which rarely fits their workflow perfectly) or spend two weekends building their own system and then gradually stop maintaining it. The flexibility is real, but it requires ongoing investment. Notion works as a task system if you treat system design as part of your job. Freelancers and independent consultants often pull this off. People with full-time jobs often don't.
ClickUp sits between Notion and a dedicated project management tool like Asana or Linear. It's free for unlimited tasks, which is its main recruiting argument. The interface is denser than anything else in this article — there are over 15 different views for the same task list (Board, Gantt, Timeline, Workload, and so on), and the settings panel has settings. For a team of three people with diverse workflows, that might be useful. For a solo user, it's almost certainly more structure than you need, and the time spent configuring ClickUp is time not spent finishing work.
Apple Reminders: underestimated, and now legitimately good
Apple Reminders got a serious rebuild starting with iOS 13 in 2019, and a lot of people missed the upgrade because they'd already written it off. The current version has subtasks, rich text notes, attachments, tags, smart lists, and — as of iOS 16 — collaboration that actually works. You can share a list with another iPhone user and both edit it in real time. For couples managing household tasks or small families coordinating errands, this covers the use case completely and costs nothing beyond the iPhone you already own.
< "Remind me to buy milk when I leave work" is processed on-device using your actual GPS, and it's reliable in a way that Todoist's location triggers have historically not been — partly because Apple has privileged access to location services that third-party apps don't always get.The weak point is cross-platform. Apple Reminders has a web interface at iCloud.com, but it's minimal, and there's no Android app. If one person in your shared household uses Android, the collaboration feature doesn't work. Todoist or Microsoft To Do handles mixed-platform households better.
For an iPhone-only user with relatively simple task management needs — fewer than five active project areas, no team collaboration requirements — Apple Reminders is a legitimate answer that costs nothing and integrates tightly with Siri, Safari, and the rest of the iOS ecosystem. The argument for a paid third-party app needs to clear a real bar before it's worth the money and migration time.
How to choose: the three questions that actually matter
Most app comparison articles give you a features table and leave the decision to you. That's useful for spotting which app supports recurring tasks, but it doesn't tell you which app you'll still be using in six months. Three questions get closer to that.
1. Where does your work already live? This is the most important question and the most ignored one. If 80% of your tasks arrive as emails in Outlook, Microsoft To Do is probably your answer. If you live in Google Calendar, Google Tasks is worth trying before paying for anything. If you write everything in Apple Notes on your iPhone, Reminders will feel native in a way that Todoist won't. The best to-do app is the one that creates the least distance between the place a task originates and the place it gets captured.
2. Do you need to share tasks with other people? If yes, your shortlist is: Todoist (shares lists with any platform), Microsoft To Do (shares lists via Microsoft account), Apple Reminders (shares with iPhone users only), or ClickUp/Notion (full team collaboration). Things 3 is immediately off the list. If no, Things 3 and Apple Reminders become real options that they wouldn't be otherwise.
3. How many active tasks do you typically manage at once? Under 20: Apple Reminders, Google Tasks, Microsoft To Do. 20-60: Todoist, Things 3. Over 60 across multiple projects: Todoist, Notion (if you'll maintain it), or a project management tool like Linear or Asana that's actually designed for that volume. The apps optimized for personal use start to degrade at high task counts because their filtering and review tools aren't built for it.
One thing worth stating plainly: switching apps every few months because something new looks better is far more damaging to your productivity than staying with a slightly imperfect system. The research on habit formation — including work by Wendy Wood at the University of Southern California, who has studied habitual behavior for over two decades — consistently shows that environmental consistency matters more than the quality of the environment. A good system that you've used for a year beats a better system you started last Tuesday.
Frequently Asked Questions
What is the best free to-do list app?
For most people, Todoist's free tier (up to five projects) or Apple Reminders (fully free, iOS/Mac only) are the strongest options. Microsoft To Do is completely free with a Microsoft account and the best free choice for anyone using Outlook. Google Tasks is free inside Gmail and Calendar and works well if your workflow is email-driven.
Is Todoist worth paying for?
Yes, if you use reminders and filters heavily. The free tier caps you at five projects and no reminders, which most active users outgrow within a few weeks.
What's the difference between a to-do app and a project management app?
To-do apps — Todoist, Things 3, Apple Reminders — are optimized for individual task capture, daily review, and personal accountability. Project management apps — Asana, Linear, Jira, Basecamp — are built for assigning work across teams, tracking dependencies, and reporting on progress to stakeholders. The overlap exists (both handle tasks), but using a project management app solo is usually overkill, and using a personal to-do app for a 10-person team creates coordination problems fast.
Can you use Notion as a to-do list?
Yes, and it works well if you're willing to build and maintain a proper task database. Notion's flexibility means your task system can live alongside your notes, documents, and wikis, which is genuinely useful. The downside is that setup takes real time, mobile capture is slower than dedicated apps, and most people gradually stop maintaining the system. It suits people who enjoy building systems more than it suits people who just want to finish their tasks.
What to-do app works best with Google Calendar?
Google Tasks integrates directly with Google Calendar — tasks with due dates appear on the calendar grid as reminders. Todoist also has a two-way Google Calendar sync in its Pro tier that creates calendar events from tasks. For a Google Workspace-heavy workflow, Google Tasks is the path of least resistance; Todoist makes sense if you need more structure than Tasks provides.
Are paper to-do lists better than apps?
For the specific purpose of daily planning, paper often wins — studies on cognitive load, including a 2021 paper in Frontiers in Psychology on handwriting and memory encoding, suggest writing by hand improves retention and prioritization. The weakness of paper is portability, searchability, and recurring tasks. A hybrid approach — paper for the daily list, an app for capturing and storing longer-horizon tasks — works well for many people and is worth trying before dismissing either tool entirely.
What happened to Wunderlist?
Microsoft acquired Wunderlist's parent company 6Wunderkinder in 2015 and shut Wunderlist down in May 2020, replacing it with Microsoft To Do. The core Wunderlist team built Microsoft To Do, so many of the interface patterns carried over. Users could migrate their lists to Microsoft To Do automatically. The shutdown was a reminder that free productivity apps built by independent companies carry real discontinuation risk — something worth weighing when choosing any tool you'll rely on.
How do I stop abandoning to-do apps after a few weeks?
The most common reason people abandon to-do apps is that the capture step is too slow, so tasks stop going into the system and trust breaks down. Pick an app where adding a task takes under five seconds from wherever you are. Then build a daily review habit — even two minutes each morning to look at what's scheduled. Apps don't fail because they're bad; they fail because the habit of checking them never forms. Start with a simpler app than you think you need, and add complexity only if you feel constrained.