Signing up for a service through iOS kind of fun. A menu pops pop, you activate Face ID or Touch ID, and the world’s most satisfying ding lets you know your purchase was successful. It’s simplicity itself.
As for unsubscribing? That’s not so simple, but it’s better than it used to be. For years Apple would make you venture into depths of the Settings app that you probably never even knew existed in order to find your list of subscriptions, and you can still take that route if you wish. Now, though, Apple now lets you access your subscriptions directly through the App Store app. It’s still not incredibly intuitive, but it’s a massive improvement over the hoops we had to jump through.