This document provides 5 tips for successful user acquisition (UA) campaigns for mobile apps. The tips are: 1) look beyond cost per install and consider longer-term metrics like engagement, lifetime value, and cohort analysis; 2) define key performance indicators (KPIs) for the campaign; 3) don't rely on a single traffic source but test multiple sources; 4) re-engage existing users which is cheaper than acquiring new users; and 5) localize campaigns for different regions. The conclusion emphasizes that UA should be integrated into the development process and that data analysis is now a core skill for developers.