Do you use timetracking tools?

The IDE that I am using (IntelliJ IDEA) has a time tracking feature. I use it to track the time I spend for an issue to fix or implement a new feature. In every commit of Github, I can see how much time I spend for a specific item. Later, I use it for resource planning or analyzing the efficiency

I use timecity.io , simple yet powerful app! Its free and i use it both at work and personally for freelancing.