Can an iPhone app charge directly to your AT&T account?

So I clicked on one of those purchasable 'powerup' things in an app on accident, and below it popped up the word 'pending'. I didn't think much of it until I realized what I had clicked on.

It said pending for about a day and a half, so I assumed it was just trying to find a credit card in my iTunes account, which isn't linked to one. I then deleted the app, fearing I had made a grave mistake… Can they charge directly to an AT&T account after one little accidental tap? Please tell me it's not a thing, and I'm just being paranoid. Thanks!

It's my parents' billing account, and it would be a charge of almost ten dollars. I'd get in trouble, that's why I'm so worried about it.

Unless it was an ATT app, and the fact you have zero credit card info listed, it's good. In app purchases 99% of the time go through iTunes and no one else. Best luck.