This is a great app designed to help you improve word use and reading and information processing speed, among other skills.
Elevate is out for the iPhone but you can download the app to your iPad. Tap on App Store icon (Blue A) . At the top of the page, there is an option iPad only. Tap this and choose iPhone only. Type Elevate in the search field and choose Elevate-Brain Training by Elevate Inc. which is Free. The icon is a blue hexagon with a white e in the middle. Download the app. It will only play in vertical position as it is an iPhone app.