Doesn't work for adding up clock time – time:calc Review

All I wanted to be able to do is know quickly and easily, if it's 2:37pm, and I worn until 1:15am with two breaks of 25 minutes and 12 minutes, how much total time I worked. A clock calculator. This doesn't even do that. The interface is flat and clumsy. Waste of money. Even if it can do time editing for A/V. No support either despite all the apparent functionality, their support website is down.
Review by Estomancer on time:calc.