Try and steer clear of any slot game and casino apps that force you to have to pay for demo mode credits, for there is never going to be any possibility that you can win real money when using such an app and therefore you will be throwing your money away paying for free play credits! Best iPhone Slot Games on iTunes Whilst some apps will cost you a small fee for downloading them there are plenty of them which are completely free to download and use, and I would encourage you to try out some of those apps initially as you will be able to see how each one works and has been designed.
It never ceases to amaze me that some people will simply download any old casino or slot app onto their iPhone without doing their homework first, and if you make the mistake of doing just that you may end up with an app you hate using or one that only has a small limited selection of slot games available up on it. Whilst I have no doubt that you are going to come across more than enough progressive jackpot awarding, iPhone compatible slot machines, the Mega Moolah is one that I do recommend, and the reason I always recommend to players is that it offers players playing for any stake amount the chance of winning one of four progressive jackpots completely at random! Free Slots Apps for iPhones