Step 2: duration and date
How much time went by, and when.
Second step. The chosen category is recalled at the top with its colour, and a link lets you change it without losing the rest.
Three ways to enter a duration

Two counters, one for hours and one for minutes. The plus and minus buttons move by one hour on one side and five minutes on the other, which covers most cases. The shortcuts below set a duration in one gesture. And each number is an input field: for three hours and seventeen minutes, you type 3 and 17 instead of tapping forty times. Below the counters, the total in minutes stays on screen.
There is no ceiling, a duration simply has to be greater than zero.
The date
Today’s date is offered by default, and two arrows step back a day to catch up on something forgotten. The “next” arrow disappears once you are back on today: you do not count time in advance.