iCloud Keychain allows you to save your DramaFever sign-in information to your iCloud account when you're logged in on Safari or iOS devices. This means you will never have to type in your login/password again!
To enable iCloud Keychain on your device, go to Settings > Profile > iCloud > Keychain > Turn 'On'.
Once iCloud Keychain is turned on, you'll be asked if you'd like to save your username/password the next time you sign into the DramaFever iOS app or website. Select 'Save' and you're done!