Ekde
[Esperanto: since]
If you want stats on the duration of anything you do or the time between you do it, then Ekde is the right tool.
It is perfect for keeping track of
and see if and how it changes over time.
There are no limits on active item count, frequency, or duration.
Customize each item with a suitable icon (there are 1000+) and color.
Add notes to the items and to the individual entries. You can format the notes with a WYSIWYG text editor.
Get stats (sum, count, mean, max, mean hours/week) for different periods (day, week, month, year).
Prefer charts over numbers? No problem, you can display all stats as charts.
Prefer charts over numbers? No problem, you can display all stats as charts.