If your kids play games on mobile devices, there’s a good chance they’re able to purchase items without your knowledge.These are called “bait apps” in class-action lawsuits. Children who persistently spend their parent's money on extras are dubbed “whales,” a term traditionally used by casinos to describe high rollers. Many parents say it’s far too easy to do and it can be costly. In 2017, Amazon agreed to refund $70 million worth of app purchases made by children. Click here to read more.