We use Harvest and have that quite nicely integrated (although it could be smoother) with Trello.
Hey @maccesch and thanks for the suggestion!
Time tracking and Budget reporting (or Invoicing) are very important features. As we’re planning on including them in Infinity in a few weeks, we will definitely include Harvest into our research and dig into it ASAP.
Thanks again for the idea! We’ll update you more about this.
You guys are really responsive. That’s very cool.