Non-IAP (No In-App Purchase) refers to a player’s preference to not use real world currency for the purchase of 
Magic Stones. This usually leads to more thorough resource management, as players will have to take great care to examine and decide whether to roll in a certain machine or to expand their box/friend list in order to maximize the use of scarce Magic Stones.
Checking Free Magic Stones
Magic Stones in game are categorized internally as purchased or free. You can check this in-game by clicking Other 
User Info Magic Stone Balances.
