There is no GT app, but you should be able to just surf the website as usual with your Android phone.
Maybe you have to download the Flash Plugin or Flash Player from the Android Market first?
Flash on Android Market
My newest tutorials:
Pentatonic Speedster
Funk Lick Library A2
Bat Country
Funk Lick Library A1
Tapping: Level 4
Tapping: Level 3
Alternate Picking: Level 2
Find all of my lessons here:
Complete Lesson Catalog
Pentatonic Speedster
Funk Lick Library A2
Bat Country
Funk Lick Library A1
Tapping: Level 4
Tapping: Level 3
Alternate Picking: Level 2
Find all of my lessons here:
Complete Lesson Catalog
