Todoist is a dedicated to-do app built around fast task entry, due dates and labels. Todowl covers that same task list, then adds a calendar, project-based notes and a habit tracker in the same workspace, so the rest of your week does not live in three other apps.

Feature	Todowl	Todoist
Task capture	Kanban board and list view per project, with priorities and due dates.	Fast, keyboard-first task entry with natural-language due dates - its core strength.
Calendar	Built-in weekly and monthly calendar, color-coded by project, in the same app.	Tasks with due dates can sync to an external calendar, but there is no calendar view inside the app itself.
Notes	A project-based notes editor lives next to your tasks.	No built-in notes feature - task descriptions are the closest equivalent.
Habit tracker	Monthly grid with streaks, grouped by time of day.	No dedicated habit tracker; recurring tasks are the usual workaround.
Where everything lives	Tasks, calendar, notes and habits in one workspace.	Tasks in one app, calendar and notes typically in separate ones.