The best to do list app for iPhone depends on how you work

There is no single best to do list app for iPhone. There is the best one for how you work. Someone who lives by deadlines needs a very different app from someone who wants five things on a list and silence. Pick by need, not by feature count, and the choice gets short. The best to do list app for iPhone is the one you still open next month.

Start with one question

Before you compare anything, answer this: what should the app do when you are not looking at it?

• If the answer is "tell me when something is due", you need reminders and dates.
• If it is "show my partner what we need", you need shared lists.
• If it is "keep a big piece of work in order", you need projects.
• If it is "nothing, I will look when I want", you need a quiet short list.

Most people only really need one of these. The trouble starts when you pick an app for all four and then use it for one.

If you need reminders and dates

This is the most common need, and iPhone already has a good answer built in. Apple's Reminders app lets you set a due date, and a location that alerts you when you arrive somewhere or leave. You can add subtasks, tags, and share a list with someone and assign reminders to them. For a lot of people, that is the whole requirement, and it costs nothing extra.

If you want more power around dates, apps like Todoist and TickTick are built for it. Both describe natural language input, so you can type "every Monday" and get a recurring task, plus reminders, calendar views and more. They suit people who plan their days by the clock.

Choose this if: missing a time would cost you something.

If you need shared lists

Groceries with a partner, chores with housemates, a packing list for a family trip. Here the key feature is that two people see the same list and changes show up for both.

Reminders can share a list. Todoist describes shared projects with task assignment and comments. TickTick describes sharing lists and assigning tasks. Try the sharing with the actual person before you commit, because the best shared list is the one the other person will open.

Choose this if: the list belongs to more than one person.

If you need projects

Some to do lists are really projects in disguise: a move, a renovation, a side business. Those benefit from grouping, sections, labels and views. Full task managers such as Todoist offer projects, sections, labels, filters and list, calendar and board layouts. That structure is worth it when the work is big enough to need it.

Choose this if: you regularly need to see one area of your life separately from the rest.

If you need a quiet short list

This is the need that gets overlooked, because it sounds like "less". Some people want a list that holds what they have to do this week, lets them add a thing in a second, and then leaves them alone. No alerts, no badges, no morning digest. They open the list when they choose to.

For this, look for a simple to do list app with very few moving parts:

• Adding a todo takes one tap and some typing.
• Finished todos leave the list, so it stays short.
• There is a way to mark what is urgent, and it floats to the top.
• A home-screen widget shows what is open without opening the app.
• Nothing sends you notifications you did not ask for.

The guide on a minimalist to do list covers how to keep a list like this useful over time.

Choose this if: reminders make you anxious or you ignore them anyway.

A few checks for any app you try

1. Time a capture. From unlocked phone to saved todo. If it takes more than a few seconds, you will stop using it on the bus.
2. Check what happens to done items. Do they disappear, pile up, or get archived? A cluttered list is a list you avoid.
3. Look at the defaults. Count the notifications it wants to send in the first week. That tells you what the app thinks you need.
4. Try it for a week, not a morning. Every app feels good on day one.
5. Think about your agent. If you use an AI assistant such as Claude, check whether it can read and add to the list. Some apps support that and some do not.

When the built-in app is enough

Be fair to the free option. If you want reminders, a shared grocery list and a few lists, Apple's Reminders app already does that, and it is already on your iPhone. Switching apps only makes sense when you want something it is not built for, like heavy project structure, or much less than it offers.

Where Very Simple Todo fits

Very Simple Todo is for the quiet short list, and only that. One row at the top to type a todo. A big checkbox, and a checked todo leaves the list. A star for the urgent ones, a note under any row, search, and a home-screen widget. It sends no reminders, no notifications and no emails. It has no due dates, no projects and no sharing, so if you need those, one of the apps above is a better fit.

What it adds is that your AI agent can connect. In Claude, you add it as a connector, and Claude can read your list, add to it and check things off when you say they are done.

If the quiet list is your need, Very Simple Todo is a simple to do list app built around it. It is on iPhone today, costs $0.99 a month, and the first month is free.