But, if you do decide to play on casino apps, they have hundreds of slot games available and can essentially be classed as slot apps. Therefore, this means you can play free slots to win real money with no deposit required on slot apps!
Generally, slot/video poker free play credits convert to real money after being played once - i.e. you'll getR$10 slot credit, then you playR$10 worth of spins, any winnings are now real cash.