To Access the Get Back Up TV app for iOS go to the App Store and search for Get Back Up TV. Once the app is downloaded you will have access to the free content. If you would like to access your Get Back Up TV account and the premium content you have purchased, go to the settings "gear" icon at the bottom right of the screen on the app and proceed to login. (see image below) From there you will have access to free content, as well your purchased content in your account.
Purchases of premium content or livestreams cannot be made inside the app. You must go to the web version of the platform at www.getbackup.tv to make all purchases. You then may view those purchases through iOS.