A lot or a little?
Parents need to know that Diamond Diaries Saga is a physics-based puzzle game for iOS and Android devices. It has no inappropriate content. Players can use real money to keep going, or can spend gold bars earned through playing. Gold bars also go into a piggy bank, but when the bank is full, it costs $3 of real money to get the rewards you've earned. Read the developer's privacy policy for details on how your (or your kids') information is collected, used, and shared, and any choices you may have in the matter, and note that privacy policies and terms of service frequently change.