The statistics
Six stacked charts, one panel per group, and the details on touch.
This is the screen you look at together on a Sunday evening.
Six charts, from the finest to the widest
The first chart gives the activity of the week, one column per day, coloured by person. That one tells the rhythm: the heavy days, the empty ones, who held the household together on Wednesday.
The five charts that follow are built on the same principle: one column per person and coloured segments per category. There is the day, the week, the month, the year, then the whole history. Height is relative to the largest column shown, and the biggest share sits at the top of its column.
Each chart is navigated by period with two arrows.
Group panels

When categories have been set apart in a group, they leave the team statistics and get their own panel, with the same six charts.
You move between panels by touching a pill or by swiping the carousel. Without JavaScript the pills remain plain anchors and navigation still works.
Why separate rather than stack everything? Because a bulky subject crushes all the others in a shared chart, and because some things do not compare. The time spent playing with a child is not in competition with the time spent buying groceries.
The detail of a segment

Touching a coloured segment opens a pop-up: which category, who, how long, what share of their time over the period, and how many entries.
Who appears in the columns
The current members of the team, and former members who have time in the period. Someone who left the team is not erased from the history: what they did was done.
At the top of the screen, the “My entries” link leads to the list of my own time, where corrections happen.