We're not going to pretend there's nothing paid. Pro exists, and it's deliberately thin: shared projects (collaborating on a list with someone else), premium themes, and premium palette-matched app icons. That's the entire Pro surface. The shared-projects collaboration experience is still being polished — we describe it as “collaborate on a project with someone,” not a full team-collaboration suite.
Notice what is not behind the wall: task count, project count, reminders, recurring tasks, sync, the date parser. None of the things that make a task manager work day to day. Pro is about collaboration and personalization, not unlocking the basics.