The app is free to download however there is an option to use in-game currency called Poké Coins, these can be used to buy Poké Balls (used to capture Pokémon). Users do not need to purchase currency to play the game. Like most other apps, purchasing these may make the game slightly easier. Parents can restrict app purchases on their own smartphones and their child’s smartphone. This can normally be done by going to the settings on your phone or tablet.