No not at all.
I THINK its only based on maybe two factors:
1) what intensity the workout's creator chose (and theres only three choices)
And 2) the time spent
So if true, it means this app would say you burned the same calories sitting meditation for ten minutes or light aerobics for ten minutes
I haven't double checked it, I just decided to not trust this app being very accurate. Its just there to give you a very rough idea, as are almost ALL "calories burnt" stats, wherever you may see them.
It's not and it can't be accurate and they can't fix it cause every individual burns different amount of calories than the other .