Encrypted chat service Cryptocat has spent the past two years blocking outsiders from reading private conversations, and now its facing a block of its own trying to get onto Apples App Store. Developer Nadim Kobeissi took to Twitter today to blast the iPhone and iPad maker for unjustly rejecting Cryptocat for iPhone, software that was announced earlier this month. Kobeissi says hes under a non-disclosure agreement as part of the Apple developer program and cannot go into specifics, but claims that the reasons the company gave for its rejection were illegitimate, and could threaten similar apps. One of the reasons for Cryptocat for iPhones rejection by Apple strongly implies that any other encrypted group chat app can be rejected, Kobeissi said in a follow-up tweet.