Ekde

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
* time spend on multiple jobs
* time between lapses
* frequency and duration of activities
* or, in general, anything that takes time
and see if and how it changes over time.

Features:
* customize everything trackable
* track (repeating) episodes of arbitrary length
* add notes wherever you want to
* get stats on episodes
* get stats on the time between episodes
* visualize the data as charts
* visualize timeline with multiple tracked items
* all data is exportable
* data is only stored locally - no one else has access to it
* lots of themes