Agreed. I am very aware of Apple policies on this regard and anything discussed in this thread, but still two weeks ago I wandered around in the Amazon app look

Agreed. I am very aware of Apple policies on this regard and anything discussed in this thread, but still two weeks ago I wandered around in the Amazon app looking for 10 minutes on how to buy a book in Kindle version... then I realized I had to switch to Safari for that. This is confusing for users.