Juggling your assignments, extracurricular activities, friends, and self-care becomes more difficult once you enter high school. You have so much to keep track of, so why not use every tool at your disposal? You're already spending time on your phone, so let's make those minutes count. From nailing that tough math problem to managing your ever-so-busy schedule, and even to filling those idle moments with something other than doom scrolling—there's an app for that. Keep reading as we dive into 30 apps and websites that can turn your phone from a distraction into the ultimate study buddy.