To check if you have a King account:
- Open the game on your device and tap the Settings button in the bottom left corner.
- Tap on my account button. If you have a King account, it will show your avatar, nickname and email. In case you are connected with Facebook, it will indicate it. If the page states your game is saved using iOS, you have logged in with Apple. See below for more information on how to redeem a gift card with an Apple based account.