Great software, hard to believe it is free. Very easy to use and reliable.

We used Clockify to track our billable hours so that we could invoice clients for our time. We can make a project for each client and put in the billable rates we have for each person. We really liked it because it was free, and then the paid versions with extra features were very low priced. We used the rounding feature for invoicing which is a must for us. The team members would have the Clockify chrome extension and they could easily indicate when they were working on a certain client. That information would automatically be tracked and we could use that to create invoices based off their billable rates that were tracked in Clockify. We used it for a while until we needed something with more built-in features.