People that don't have DrawChat yet get invited with an SMS that contains a link to a page on our server. That page redirects you to the App Store. So we know how many people see our App Store listing.
On the other side, Apple provides you daily download numbers, which you then compare to the "first app open" counts on Flurry, Localytics, or your analytics provider of choice.
We can differentiate people who came to DrawChat organically vs. through invites by seeing if they had an invite waiting after sign up.
That makes sense. Just wanted to clarify that you weren't able to measure your organic app store pageview -> install conversion. I thought I had missed some hidden feature in iTunes connect, which is definitely possible.
