No, because I try FortuneJack and its not required any deposit to get that free 25 spin, if you a new registered to their website wait atleast 24 hours to be activate the free 25 spin and you can try it.
If it's not required to deposit, how if we win from that free spin? Do we able to withdraw our winnings without any pending withdrawal? Will they let you playing with free money without any deposit?
Seems nope.
There should be a condition to achieve before you can play with free spin