A suggestion (not really just for you, but given the headline it's applicable): don't describe yourself as the X of Y [1]. It carries with it any negative connotations that may be associated - fairly or not - with X. Second, it doesn't really define what your product is. It just says your product is like this other product X.

In particular here, it's a bit worse: "napster of mobile" doesn't really mean a whole lot - peer-to-peer file sharing that was shut down? music download service that was sold and re-sold? Doesn't seem like either one fits, after visiting your site.

[1] Not sure if that came from you or if submitter has no relation.