Thanks to internet good guy Merlin Mann, I use Fakespot whenever I consider buying something from Amazon. It’s a free service that attempts to analyze product reviews and ratings to identify deceptions. It also aggregates tests and scores sellers so you know if you’re buying from a supplier that is trying to manipulate the system.
Now Fakespot has an iOS app that adds a new sharing extension for URLs.
The extension does little more than open a web view with Fakespot results, but that’s enough. I use it directly from the Amazon app.
Don’t expect Amazon to manage review quality for you. They really just want to sell this junk. In my experience Amazon is far more careful about allowing negative reviews than they are about the analyzing for and rejecting paid reviews.