Earlier this month Cerulean Studios, the company behind the popular Trillian multiprotocol instant messaging application, announced that the final version of Trillian 5.0 for Windows had been released to the public, bringing with it a new interface, improved social integration, continuous client functionality, and cloud-stored chat history. Cerulean Studios was also announcing at the time that Trillian 5.0 for Windows is free for desktop and mobile.

The catch was that when Trillian 5.0 was rolled out, the mobile versions of Cerulean Studios’ products were not out just yet. The news is that one of the aforementioned mobile products is now out and it is offered free of charge: Trillian 1.1 for Android.

“We’re pleased to announce that Trillian for Android is our first mobile application to go free, so head on over to the Android Market on your phone to get your copy! We’ve fixed a handful of bugs in this build, added a basic chat history viewer, and made major improvements to our networking engine. You should notice fewer disconnects and should be able to interface with existing chat windows more easily even when you’ve lost your network connection,” explained Cerulean Studios.

Cerulean Studios went on to say that if you are a paying customer of Trillian for Android, then your account has already been upgraded to ad-free status. You will not get to see any ads in the Trillian for Android client, unlike the users who did not purchase Trillian for Android in the past, who will see ads in the free Trillian 1.1 for Android.

Furthermore, you will not see ads in the iPhone or BlackBerry version of Trillian either. If you switch from your Android-powered device to an iPhone or BlackBerry, “your original Android purchase will be honored as if you bought Trillian there as well,” said Cerulean Studios.