From February 5th, 2015 to February 27th, 2017, 75% user give 4-star rating, 25% user give 1-star rating. for Punchtime for Trello chrome extension.
EDIT: Seems to be fixed! Working well except that I can no longer open Trello in more than one tab.. Punchtime seems to close additional tabs automatically, I don't understand why.
Impossible to uninstall.
It's great. Does exactly what I need and the interface is very nice. I don't mind the popups because they close automatically. Once the time has been logged, the card page automatically refreshes to include the time spent. Love the ability to pause as well. It would be even better if: 1) I don't have to sign in every time I open the browser 2) the label could automatically match that on Trello when there is only one label set. Thanks for this great service and looking forward to updates! @Drew: You can see the time spent for all the cards on the board at the top left corner, beside the board name. I don't think it's available for a list.
Very well designed service. However the workflow is a little counter-intuitive. You have to visit their page to add logs, or add them in a popup. Also the time estimates on the cards don't refresh automatically. As a feature request, I'd like to have a way to see the time spent for all cards on a board or list. Otherwise, a nice simple tool for tracking time. I've looked through quite a few time tracking tools and this seems to be the best.