I am a developer of an iPad application that can be used to expedite the transfer of information from patients to physicians. We are marketing to a wide variety of multispecialty adolescent clinics, and we are monetizing the app through a monthly subscription fee through the appstore.
We envision that one way to monetize the application is through corporate sponsorships (logos on the splash page of the application that physicians view) and that pharmaceutical companies in particular would be interested in sponsorships.
Unfortunately, I can't find numerical estimates of the avg amount of money we could expect to get from corporations on these sponsorships. Does anybody have a back-of-the-envelope estimate for me, or direct me to resources where I can obtain one?