If you're an advertiser using Facebook ads on mobile, you may as well just stop advertising on Android right now and go iOS-only. That's because an analysis of over 200 billion Facebook ads on mobile by Nanigans (one of the largest Facebook ad buyers) found that the return on investment of a Facebook ad on iOS is 1,790% greater than the same ad is on Android.
Think about how profound that number is for a second: put the same ad on Facebook for mobile on an iOS device and an Android device and you'll make 1,790% the ROI. What's more, since the average cost of CPMs (cost per thousand impressions) is US$4.99 for the iPhone and $4.87 for Android, it hardly costs advertisers any more to increase their ROI by almost 1800%. In even more bad news for Android, while advertisers get 162% m