I'm pleased to see that Amazon will be offering their Kindle app for the Android market this summer. The app has been available for iPhones and iPads for a while.
The big news: you’ll be able to buy books right from Android devices.
For anyone who has used the Kindle app on the iPhone or iPad, not being able to do that is one of the big annoyances. If you want to buy anything, you’re kicked out of the app, back to the web, to make the purchase.
Yes, it’s silly. But both sides likely put up with it for their own reasons. From Apple’s perspective, the Kindle Store directly competes with its own iBookstore. From Amazon’s perspective, there’s no way they’d pay Apple a 30% commission to sell their titles as in-app purchases.
Android doesn’t present those issues.