The kindle app, which is rather lackluster on any device, including the eInk Kindles, looks best on the iOS version. I stick with Kindle apps for the ecosystem which Marvin cannot yet supply. I had a Fire HD last year and the Kindle for iOS app was better, so the Fire HD got returned.

And I agree, the Android apps just didn't cut it for me. I gave it over 2 years but got tired of settling for second and third rate crap.