Annet uses it to track when she starts feeding her baby and stuff. But you can us it for tracking all kinds of events, the buttons (including their color) are configurable. The log shows a list of events and their times.
Adding a note, changing the time and deleting is possible. How to edit an event?: Do a long click (press and hold it) on an event in the list to change or delete an event.
I hope you find it usefull, let me know what you think!
Version 1.6: cleanup event overview, added icon Version 1.5: Events can have an extra note and changing the date/time of an event is possible now. 1.4: I don't know how I got away with it: Annet's Event Logger had no color! So unlike Annet. Now every button/event can have its own color. 1.3: bug fix 1.2: On users (2) request: deleting an event is now possible. Perform a 'long click' on an event and a context menu appears with delete options.