There is no single best productivity app for every person. A useful choice depends on whether the main problem is remembering tasks, coordinating a group, storing notes, or planning a project.
For personal task lists
Todoist and Microsoft To Do focus on actions, due dates, recurring tasks, and simple lists. They are suitable for daily planning and recurring responsibilities.
For visual project planning
Trello is helpful when tasks move through stages. Boards can show what is planned, in progress, waiting, or complete.
For mixed notes and planning
Notion and Evernote support longer notes, references, and planning pages. They are useful when tasks are connected to documents, research, or structured information.