This document provides advice on commercializing and sustaining an app beyond the initial hack. It discusses evaluating whether an app idea is viable, outlines common business models like mobile apps, SaaS, and services, and recommends steps for launching an app such as establishing communication channels, capturing advocates, and measuring analytics using "Pirate Metrics" like acquisition, activation, retention, referral, and revenue. The key messages are that commercializing an app involves both technical and business challenges, and successful apps iterate by reacting to metric data from users.