All basic World of Darkness experience costs apply.
Additional Experience Costs:
Core Techniques - 5x per dot (Must be purchased in order)
Other In-Group Class Techniques - 7x per dot (Must be purchased in order)
Group Techniques - 3x per dot (Can be purchased a la cart, or in order if in a tree)
Soul - 10x per dot (Can only be purchased with Heroic Experience)
on iPhone, iPad, AppleTV, PC. It's free.