your given plenty to play each level with, then given so much to use for rerolls , or for towards help with answer. But once gone ,your then stuck made to watch back to back ads for only one life line.Which if you don't do, ends the level and goes AGAINEST your winning streak. You can collect stars, but the only use for them is piggy bank ,but you also have to purchase with real money.To even use the stars.you are never given or earn hearts or lives in the rewards you win. But are required .