Iphone users: Is there a blackmart alpha out there for iphone?

I had an android and I remember how convenient it was to just download the blackmart alpha and then download as many apps as I wanted. Now that I have an iphone and I do kind of find it strange that they ask for your visa card number… So is there any other app stores as good as blackmart?

The credit card is just to verify your account, nothing gets charged unless you buy a book, app, rent a movie, etc.