Firefox Not To Be Developed For iOS.
During September 2012, Mozilla pulled back it's browser from App store due to their Apple's "not-so-accomodating" attitude.
Anyways,Only 1% of market is hold by Mozilla Firefox when it comes to web browser market.Honestly,The Apple users won't be missing Firefox as Safari is quite good in rendering techniques & JS Engines.

Source : NetMarketShare.com
What's your take, Apple Owner CEans ?
Are you gonna miss Firefox or you are happy with Safari ?