You can't just convert iOS apps into Android. iOS is Objective-C and Android is Java.
I highly doubt there are 'converters' on the internet, even if there are that's not the way you should program an app because every SDK has his own special capabilities and you should use them for maximum user-experience.
I'm sure there are some companies who specialize in porting apps from iOS to Android. Look it up on Google I'd say..
