Review on Pastel.io by Adrian Carvahlo

The ability to create custom dashboards, easy access of metrics/ KPIs, notifications via email or Slack channel etc., it's free forever, so there is no risk if you don't like them, you can always delete all your data! I dislike that it doesn't sync with other tools (I use Zapier), but this is not really their problem since they are trying to be as flexible as possible in order to expand into more industries.

It helps me keep track of my time spent working vs. out of office hours and make sure I am getting enough rest / breaks.