This lightning-fast task manager makes entering even the most complex to-dos unusually easy.

What we love: That you can add a task using natural language (“Call dentist next week”)—no drop-down menus or tapping around fields required. Todoist even understands more complex phrases like “every two weeks” or “every third Wednesday of the month starting in January.”

Quick tip: Create a project to put together chore lists, organize assignments, or separate work to-dos from personal ones. To add a task to a project, just include a related hashtag (#work, #shopping). For example, typing “Citizen Kane #movies” will bring up your projects list so you can create a new one or select an existing one (like “Movies to Watch”).

Meet the creator: Todoist started when founder Amir Salihefendić was a computer science student and needed a way to track his studies and work. What began as a personal project now employs more than 100 people across 31 countries who help millions organize their lives.