For those too lazy, I mean busy, to expel brainpower on something as menial as working out the total hours between a start time and end time (and your calendar does not have that feature), here you have the Total Time Calculator app to save the day!

No more do you need to use your OWN brain-power to work out how many hours you spent working on that task from 10:30 to 14:15 earlier today. Now you can outsource that burden to your phone.

Your phone is capable of more than just Candy Crush