OOBLADA games are free to play, but you can buy in-game currency to progress faster. In-game currency is purchased with real money using either Google or iTunes.
To set restrictions on your device and make sure an unwelcome buy does not accure, please refer to links below for :
If you’d like to continue making in-app purchases, set the device to require your password every time you make a purchase (select “Immediately”) or every fifteen minutes.
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