Cerulean Studios, LLC has Trillian for iOS (iTunes Link) in the iTunes App Store and Android for FREE for a limited time.

Trillian for iOS and Andorid helps you organize and stay in touch with your IM and social friends while on-the-go. Receive push notifications, send pictures and messages, and optionally synchronize with Trillian for Mac. You can even use Trillian to Trillian messaging to save on SMS costs!