DO NOT USE REAL MONEY OR WATCH ADS. The game is designed to squeeze as much real money out of you as possible. Ads constantly freeze and sometimes you watch ads and an error occurs which doesn't provide the reward. Some items are priced to convince you to spend real money, but if you dont buy then the item becomes cheaper or free further into the game. Patiently play the game for free and you will have a decent experience. But the controls are horrible.