In the Audience view you can compare engagement, amount spent, reach, and impressions by gender and age.
If you book a desktop app you can run your ad both in the News Feed and Right Column. In the view Placement you will get a breakdown by engagement, amount spent, reach, and impressions.
You can review the count and value of in-app conversions for each of your ads and campaigns using the Ads Manager. If you offer in-app purchases you can use these figures to calculate your ROI and optimize your ad spending.
You need to add the Facebook SDK to your app and measure actions taken within your app using App Events.