What you're planning is written down — not in your head.

Today shows what's due today, and what is already overdue, because that has to be decided today. Upcoming has one group per day. In between are the documents and emails with an open action and a date, three days ahead, and everything you've set a reminder on.

Pay rent due Sep 30, Write report 2 h, … remind me tomorrow at 9:00 — Undan splits the sentence into title, project, tags, When, Due, Duration and repeat as you type.

When is the day you mean to do it, Due the day it must be done by. With a time, the task notifies you at that time — it doesn't become an appointment. A start date keeps it waiting until it's time.

A project is a note with an end. Sections with a period become phases, tasks carry an estimated duration, and the Timeline shows it all at a glance — in red with “tight” when more work is estimated than days remain. Move project… shows which deadlines move along.

An area is a note with its loose tasks, and at the top its projects with progress and end date. How you organise is up to you; Undan doesn't prescribe it.

The same sidebar is in the calendar. Whatever needs a fixed time you drag into a free hour, and it becomes an appointment, with a Google account there too. Deadlines and reminders come from Undan itself; your calendar doesn't fill up.

A task carries its documents: the two fuel receipts for the accountant, the three invoices of a payment run. Pay done (3) enters the date on every document, and one Ctrl+Z takes it back.

At 9, 13 and 21 o'clock a card sits above the list. In the morning it asks: Which three first? At noon and in the evening: later today, tomorrow, this week, or dismiss. The times can be changed.

Sidebar, list and details each have a key; a task is done with one key press, and Ctrl+Z takes it back.