His 4th point about cancelling subscriptions is pretty solid I wish all app stores would add that prompt. Most people dont know how to cancel app subscriptions cause they are hidden magic. They likely think having the app installed ensures the app charges money.

What's scary is the prompt doesn't emphasize the amount of money to be spend enough. I think if you're going to subscribe to anything, it shouldn't be such a simple dialog, you should be forced to look through some sort of clear page that separates the micro-legal jargon and shows you the cost in big bold letters.