I use my calendar for this. The event name is my notes for what I did. I find I forget to hit start (or stop) at the exact perfect time with these tools so they’re always only showing a partial view. With the calendar, I can go through and add in events for what I did in the morning or the day before.

Also, the best tool I’ve found for accountability is to try and predict what you will spend time on before hand. So I have one calendar for my plan that I make first thing in the morning and another for what actually happened.