Tasks can be structured in nested lists. They can be moved around by dragging and dropping them or via keyboard shortcuts. Tasks can be assigned labels, color codes, priorities, and can also be grouped into projects.

Anyone can be invited to collaborate on tasks and projects. Users can work alongside five people for free and 25 via the paid version. Collaboration includes the ability to assign tasks, comment on tasks, and receive instant updates.

Todoist allows you to perform advanced queries to find tasks that are overdue, have a certain priority level or label, are within a certain project, are assigned to a certain person, or have a deadline set within a certain date range. It also allows combining different queries, removing certain results from the queries, and creating either/or statements.

These queries can be saved as filters for easy access. Filters can be color-coded.

Todoist monitors how many tasks are completed and gives karma points as rewards for accomplishing them. It can also display charts showing productivity trends, which are great for finding areas that need improvement and increasing your overall productivity. This feature is a great motivator and an effective way of tracking productivity.

By clicking on a task and then selecting “schedule,” a dialog box will pop up with shortcuts like "today," "tomorrow," or "postpone until tomorrow." A date can still be entered manually.

Swipe right to mark a task as done, swipe left brings up several rescheduling options (tomorrow, next week, specific date, etc.).

Typing # while entering a new task brings up the list of projects (and sub-projects) to assign the task to. Type in any letters of the project name to filter the list to a subset of projects that have those letters in them.

The Todoist app supports Apple Watch and Android Wear for instant action and task viewing through smartwatches.

Location-specific tasks can utilize the GPS in your mobile device to offer reminders when you are in the appropriate vicinity. For example, grocery lists that are linked to the location of your regular grocery store.

Todoist Smart Schedule adapts to your habits over time, analyzing your workload and determining how urgent a task is. By using both your past todos and future todos (as well as the data from millions of other users), it can sort your tasks in most important/ most urgent order, if you want.

You can shift between devices without having to worry about if tasks have been synced or not. Todoist sync will always be quicker than you.

You can make tasks stand out by setting them in bold and spice up your project names with emojis. Todoist also allows editing of hyperlinked text in the task comments. Hypertext, bold text, italic text, and emojis are supported in task names, project names, and task comments. Emojis are also supported in label names.

Hypertext, bold text, italic text, and emojis are supported in task names, project names, and task comments. Emojis are also supported in label names.

You can easily program a digest email that will send you an up-do-date summary of your tasks and deadlines.

Todoist offers integration with a wide range of external apps, including Google Drive, Dropbox, Google Maps, Apple Maps, Zapier, Toggl Button, TaskClone, CloudMagic, IFTTT, Calendar Sync, Google Now, Dispatch, Mailplane, Airmail, Drafts, Workflow, PomoDone, 1Password, Powr of You, Mailbird, Yoke, Taco, Ginger Keyboard, Time Doctor, and Rindle.

Bookmark any webpage as a to-do item.

Tasks can be saved as templates by going to "task actions" and selecting "export as a template." The template will be saved locally. Saved templates can then be imported by going to "task actions" button and clicking "import from template." This allows you to use past task items as a starting point for creating new tasks.

The native widget is fully functional and editable without needing to open the app. A premium feature allows you to add and edit the task list on your mobile device’s lock screen.

Todoist supports phrases like "tomorrow," "next month," "in 3 weeks," or for recurring tasks, "every week" or "every 3 days."

Todoist's web and desktop interfaces have a 2-column layout. The right column has all tasks organized in nested lists with color codes and information such as what people are assigned to each task and which project the task is part of. The left column offers ways of accessing various groups of tasks – tasks that have to be completed within a certain timeframe, tasks that are a part of a certain project or have certain labels attached to them, etc. The left column also contains filters that allow even more advanced ways of finding a group of tasks.

The mobile interface follows a similar design philosophy, but gives each column a separate view.

The unpaid version contains no ads or popups encouraging you to upgrade. The only time you will be asked to upgrade is if you attempt to use a premium feature.