AndroIRC is not available for iPhone but there are a few alternatives with similar functionality. The best iPhone alternative is Trillian, which is free. If that doesn't suit you, our users have ranked more than 50 alternatives to AndroIRC and four of them are available for iPhone so hopefully you can find a suitable replacement. Other interesting iPhone alternatives to AndroIRC are IRCCloud (Freemium), LimeChat (Free, Open Source) and TurboIRC (Free).
Trillian is an instant messaging app that works on phones, tablets, and desktops while keeping your chats neatly synchronized between all of them! We think conversation should be easily shared between all of your devices, not trapped as text messages on your phone.