Paying for apps usually comes down to two choices. Pay for a full year upfront and save, or pay monthly and spend more over time. Apple makes that choice easier with a new option that splits a yearly plan into monthly payments, with the same annual price. Annual subscriptions usually come with better pricing, but paying for a full year in one go isn’t always easy, especially for expensive apps. Monthly plans solve that problem, but they cost more. Here’s how the new option from Apple works: You sign up for a yearly subscription The total is divided into 12...