But this is the story of something different. The name of the app gives away the reason why the Android version of it had a 7 month head start over the version of the app that resides in the Apple App Store. It's a little ditty by the name of Google Play Books which was updated this past September for Android users with an outstanding feature that lets you find a geographical place mentioned in a book, on a map. Tap and hold on an address in flowing text mode, and you will get a description and a Google Maps look at the location.
Also added with the App Store update is a user guide, support for EPUB books and vertical Japanese flowing text, plus improvements in stability and performance. So now when it comes to this app, it's a tie between iOS and Android. Hopefully we will see more of this "app equality" soon for both sides.
source: GooglePlayBooks via Engadget