Re: App Name
Well according the court document, it would seem: Google Play Services!
The relevant sentences being: "After powering on her phone, Plaintiff was asked to provide a Google e-mail address or sign on using a Google e-mail address; she signed on using her prior Google e-mail address. Subsequently, the Android operating system prompted Plaintiff to provide payment information in order for her to receive updates regarding her phone. " [page 3]
I regularly get prompted to enter a payment method (card/paypal) when accessing Google services (gMail, Play Store). The pop-up does strongly imply that you must enter details before continuing, so I can see that normal people may be fooled/tempted into entering payment details when none are actually necessary.
So I suspect one of the key issues is whether having associated payment details with your Google account, should Google have also explicitly asked permission to use those details in the Play Store and secondly whether Google did/didn't should of notified via email all transactions being made, rather than simply bill them using the registered payment details.
What is clear, is once again the only safe payment method (other than none) to have associated with a Google/Apple/Sony etc. online account is a prepaid voucher.