If you purchase the Unlimited service via iOS in-app purchase, does it automatically charge the fee from your iTunes account monthly? I am aware that it is cheaper to purchase the Unlimited service from Rdio.com, but I would prefer to purchase it via in-app purchase because I have a $100 iTunes giftcard. Thanks.
Thanks for writing in. Yes, a subscription via in-app billing will automatically charge the fee from your iTunes account.
If you'd like to switch over to billing through us at any time, please let us know and we can help you set that up.