Hop on Pop by Dr. Seuss is an iPhone application that brings the best-selling classic children's book to life with playful interactivity, delightful animations, and fun activities. This app is a winner of both the Children's Technology Review Editor's Choice Award and the Academic's Choice "Smart Choice Media" Award.

The app features tap and drag interactivity to find playful surprises throughout the book. It also offers a range of learning activities, including spelling, phonics, rhyming, and reading comprehension. Parents can track their child's progress in the Parents section, which includes information on minutes spent reading, pages read, and more. The app is designed specifically for beginning readers and is aligned with kindergarten level English Language Arts (ELA) standards.