IMPORTANT, PLEASE READ THIS SECTION FIRST:
The instructions below are only intended for users of Version 3.0 or higher.  If you have are using Version 2.0 or lower, please note that the product has moved, and the same app is now available as Thomas & Friends: Engine Activity Fun -- please download the new version here: https://itunes.apple.com/us/app/thomas-friends-engine-activity/id623385416?ls=1&mt=8.  

For Version 3.0 or higher users ONLY:
Because Engine Activities is universal, you should be able to run all purchased packs on iPad and iPhone, without needing to buy them again. To access an already purchased pack on a different device, simply tap the “Buy” icon on the second device. The app will recognize that you already own those activities, and you will be prompted to begin the download free of charge.