I'm using mite (http://mite.yo.lk/ http://mite.yo.lk/) for my freelance work, bit we don't use time tracking at our startup. The tech guys measure productivity

I'm using mite (http://mite.yo.lk/ http://mite.yo.lk/) for my freelance work, bit we don't use time tracking at our startup. The tech guys measure productivity by checking or crossing out squares on a squared notepad, but that's exclusively for self-assessment: How much time do I spend working productively, how much is wasted on interruptions, etc.