Todoist is one of the best online productivity apps on the market, and the basic version, which will satisfy most readers, is free. To use Todoist, readers must go through a simple sign up process. From there, they can create their first project, then add tasks and subtasks, set due dates, and manage priorities. The idea is that Todoist helps users track their projects by helping them prioritize their tasks. Once a task is completed, you simply click the small box to the left, and move on to the next task. There is also an inbox where readers can quickly add to-do items without attaching them to any particular project. For readers who would like something more, there are also options to add notes, set up filters, sync calendars, upload files, and share projects, among other possibilities. Todoist provides a simple and effective platform for staying organized and productive.