It's not quite Crash Tackle Rugby for iPad, but it's a great way to play against live CT opponents around the world.
Vassal is a game engine for building and playing online adaptations of board games and allows users to play live on the Internet or by email.
The Crash Tackle Game Module for Vassal is available for free and we've made use of some really cool features like 'Player Moved' markers, Movement trails and Tackle Zone hi-lites that increase colour saturation in heavily protected areas, allowing you to see at a glance where the opposition defence is strongest.
If you're looking for opponents please post a message in the Crash Tackle forum!
For those of you who do not have Crash Tackle but would like to try out the online version, you can Download the CT rules in PDF format.