Yes, but I‘d like to have those tasks in a Reminders list, so I can move them in and out within the Reminders app. Like a “Today” list in the Reminders app where I can move existing todos to. Otherwise I have to organize and maintain tasks in two apps, one for the tasks committed to today, and one for all the others. This is a non-starter. Moving tasks between the two apps would be too much of a hassle.
All todo apps already provide a way to have a Today list. What your app brings to the table is the widget. But if that isn’t interoperable with other task management, then it’s a poor value proposition. If you’d make it interoperable, however, then it’s something I would pay for.