Apple does a lot of things well with app purchases. You have to give your password to confirm each time and the information is obvious and they send an email.
However, it boggles me the number of steps you need to go through to cancel subscriptions. Why is there no "subscriptions" in Settings or at least directly in "iTunes and App Store"? You have to click on the id which is 100% non-obvious unless you search online. The answer is obvious but seems to undermine the rest of their consumer friendly stance.
