I use Harvest now, their OSX app actually tracks when I'm idle for too long and ...

xorgar831 on Feb 16, 2014 | parent | context | favorite | on: Ding.io

I use Harvest now, their OSX app actually tracks when I'm idle for too long and will prompt me to roll back the amount of time I've been idle. It doesn't remind me to turn on the timer though when I forget. ;-)