One can start using Aha radio as a guest or a registered user. A registered user can save their Favorites and access the Favorites across multiple devices.
To register an Aha account, you need to install the Aha radio app from Playstore or iTunes store on your smartphone(Links below). Open the Aha app. Select the option 'Sign Up' and provide the requested details to complete registration.
Android : https://play.google.com/store/apps/details?id=com.aha.android.app&hl=en
iOS : https://itunes.apple.com/us/app/aha-radio/id355829417?mt=8
Once registered, to Sign in to Aha, open Aha app and select login. Provide your Aha login credentials to sign in.