iOS App Store Connect – Does Apple Reveal iOS Review Wait Time?

I understand it to be limiting the type of information apps are allowed to track about you. Specifically, they shouldn't store your UUID.

For example, apps could associate your UUID with behaviors you demonstrate in the app and so provide targetted marketing. The idea of behavioral tracking and targeting are discussed on this World Privacy Forum page.

The upshot is that if you enable privacy, apps shouldn't provide tailored (targetted) adverts to you based on what you do in their apps. I'm not sure how it'll be enforced though; perhaps, it prevents access to your UUID, but I'm not sure if that'll be for iAd apps only.

The "Learn More" link at the bottom of your screen gives some explanation in Apple's own words. The non-personal reference I think is about anonymising your UUID (so it can't be traced back to you personally) but in essence its still a UUID.

I'm sorry I don't have more specific information about the implementation but hopefully this sets the scene somewhat.

By my reading, it doesn't. Which rule do you think it violates?

Section 11 covers In-App Purchases, which Amazon's app doesn't use, and which are only required for "content, functionality, or services in an App". Amazon doesn't let you buy anything to extend their app.

Amazon's app also doesn't allow purchasing ebooks, which is their only product (AFAICT) that might be covered by section 11. They have a note at the bottom of all ebook pages that says "This mobile application does not currently support Kindle downloads, however you may add the item to your Wish List and purchase it using the browser on your device".

Finally, section 20 explicitly prohibits allowing the user to purchase a lottery ticket, which suggests that there is nothing unacceptable about other real-world purchases. Lots of other apps allow them, too, like eBay.