"Recording" encrypted streams will be prohibited by the TOS (Terms of Services) that YOU agreed to by subscribing. Therefore there is no real easy direct and legal way to record those streams unless your streaming service OFFERS some way to download and watch later.
It is for those reasons why many services "offer" paid ENCRYPTED streaming, if it was easy and legal to record the encrypted streams then someone would start offering FREE copies online and then there would be no reason for anyone else to "buy" a paid streaming service.
I suspect your "watch free" App should allow you to at least rewind and or rewatch at a later time..