I do not. I’m in the process of getting my own app developed and in my research I found that if you sign up for the iTunes Affiliate Program (www.apple.com/itunes/affiliates/) , use your unique link where ever you send people to the iTunes Store or App store and you get a commission on anything they buy within a 24 hour session or until they click another affiliate link. So even if they don’t end up buying your app if they buy anything you’ll get a commission! So, make sure you include affiliate links inside your app too.

I’m not sure what type of analytics they provide back to you for any purchases or activity but hopeful it’s something to overcome the data disconnect once inside the App Store.