The federal government on Wednesday said Apple has agreed to pay at least $32.5 million in refunds to parents who didn’t authorize hefty purchases racked up by their children on their iPhones and iPads. The Federal Trade Commission’s settlement with Apple is the first punishment handed to a major tech company over the handling of children’s apps. It comes amid growing concern that as children clamor to use mobile devices, companies are doing little to protect their privacy or provide parents with the tools to supervise online behavior. Apple drew the attention of FTC investigators nearly three years ago after a storm of consumer complaints from parents who were surprised by charges on their credit cards when their children used games such as Tap Pet Hotel and Smurf’s Village.