Appointments and tasks in one grid.

The task sidebar is on the left. Drag a task into the grid and it gets an appointment to the quarter hour; dropped on a day, that day becomes its deadline. The card counts how often it has already been moved.

F shows the gaps in the week, such as “2 h 30 free”. Plan the day spreads the day's open tasks over the free time, overdue ones first — as a proposal; one click accepts it, one Ctrl+Z takes it back.

Type day, time and guests in one line, and the appointment is created; what Undan has recognised is shown as you type.

Your appointments are stored on your device: viewing and searching work without a connection, and so does editing. A change shows in the calendar at once and is sent later, even after a restart; if something else changed in the meantime, you decide.

Undan suggests guests from your contacts, appointments and emails. An invitation only goes out if you tick the box — and it's unticked every time. You reply to invitations in the appointment's card.

For every guest the card shows what your archive knows about them: their projects, open tasks, the latest correspondence. Found by email address.

Series with their own rules, a second time column, and an end in another time zone for flights. Ten minutes before a video conference, Join conference appears above every tab.

Bring in an iCal file (.ics) with I; Undan spots what is already in the calendar. One Ctrl+Z takes back the whole import.

W, M and L switch between week, month and agenda, T jumps to today, J and K page through, N creates an appointment. Every key can be reassigned.