> Show your ads only to new customers, existing customers, downloaders of your other apps, or to everyone. You can also refine your audience by gender, age, and show your ads only to devices located in specific geographic areas.
> By adding just a few lines of code to your app, you can easily understand the value of different customer groups over time and the keywords that drove their conversion. You can use this information to optimize your CPT and CPA targets for different keywords, ad groups and audiences.
> Ad groups are a collection of keywords relevant to the app you’re promoting in App Store search results. You can set specific criteria and bid amounts for each ad group. Ad groups are an effective way to define who sees your ad.