After her Click'd catastrophe, Allie Navarro is determined to redeem herself. So when the class gets an assignment to create a mobile game from recycled code, Allie pairs up with Courtney, her best friend from CodeGirls camp, to create the perfect app: Swap'd. Kids buy, sell, and trade stuff at school all the time. Candy. Clothes. Video games. Slime. Why not make a fiercely competitive, totally anonymous, beat-the-clock game out of it? Once Swap'd...