Searching Google Play Store for Android apps brings up no matches for the Full Tilt Poker App for Android and likewise the Apple App Store also shows no downloads for a Full Tilt Poker App for either iPhone or iPad.
The sad thing is that Full Tilt Poker were one of the very first to offer their players mobile poker apps for both Android and iPhone mobiles, it seems they have neglected to re-add the once popular mobile software which once included Full Tilt rush mobile.
One can only imagine they have plans to add their Full Tilt App to the Google play store and the Apple App store sometime in the future, but to date no information can be found about the apps on their website, they have simply disappeared.
PokerStars still offer their App for both Android and iOS devices, but personally I prefer the 888 Poker App along with the weekly promotions they offer.
Update March 2014: The Full Tilt Poker App seems to have been reopened after not being available for some time, the relaunched app is only the rush poker app, you can download it directly from your iOS or Android device from here: Download FullTilt Poker App