How do I install the eStories app on my iPad?

By default, the Apple App Store is set for "iPad Only" apps.

In order to find the eStories app, you will need to switch from "iPad Only" to "iPhone Only" in the navigation bar. You can then search for eStories, find the app and install.

You will download the eStories app which is optimized for an iPhone  but can be used on the iPad as well.