Learn how to target people by platform, interests, age and other demographics, or connections to Pages and apps.
Identify people who downloaded your app but didn't open it recently.
Create a Custom Audience to target subsets of people who have used your app. For example, find people who were previously active but have not used your app recently.
Find more people who are similar to your established customers.
Create a Custom Audience to target people you know about from other sources; for example, your newsletter subscribers.
Use Apple's and Android's Advertising Identifier or Facebook User IDs, which are called mobile advertiser IDs, to create customer lists.