What makes a weekly planner feel calm instead of demanding?

Most productivity apps eventually become another system to maintain. With Weeklane, I’m trying to do the opposite: keep the whole week visible, make adding a task nearly frictionless, and let reminders, calendars and shared Projects stay optional.

Weeklane launches here tomorrow, and I’d love input from people who care about calm software: what is the one feature—or absence of a feature—that makes a planner feel genuinely peaceful to use every day?