Purchasing an app on an Android phone is a distinctly different experience than purchasing your typical shopping cart product online. "Cart abandonment" is just

Purchasing an app on an Android phone is a distinctly different experience than purchasing your typical shopping cart product online. "Cart abandonment" is just not a significant factor in the Marketplace. You enter your card ONCE, and from that moment forward, the process of buying an app is nearly identical with the iPhone (UI aside).