I've always heard that the CPI with Facebook Ads was ridiculously high. Thank you for posting the results of your experiment. 0.009% installs is amazingly low t

I've always heard that the CPI with Facebook Ads was ridiculously high. Thank you for posting the results of your experiment. 0.009% installs is amazingly low to me, but I'm not too familiar with ad-based installs for iOS apps. I've weighed heavily on word-of-mouth and just "quality" (website, app, reviews, etc) instead of CPIs. Could you elaborate on how you chose your demographic?