Hi there, I am considering creating an app for the first time. Since it will represent a significant time investment, I am wondering if it will get a decent return ($) on my investment. I am thinking of making the app free and running it with iAd. Therefore, I've been trying to find statistics about how much money developers typically get, but I've had no luck. COULD SOMEONE RUNNING iAd POST THEIR TYPICAL REVENUE? Thanks. So far, I know that revenue will depend on the: - App's Popularity - App's Type/use - App's User demographics - Number of companies advertising on the iAd network - Developer/Apple earning ratio (now at 60/40) Also, these are the metrics I know (although I am not 100% sure): - Requests: Number of times an add starts loading - Impressions: Number of times an add completes loading - Fill Rate: Impressions/Requests - Click-through ratio (CTR): Clicks/Impressions - Effective cost per thousand ad impressions (ePCM): [earnings/ad impressions] * 1000 Finally, here are some questions that I am hoping someone can answer: - What are the formulas for calculating revenue in iAd, AdMob, and AdSense? - Is it possible to get different revenue amounts with the same number of impressions and clicks (i.e. different ads being displayed)? Thank you all.