539 Reshaping Your Approach To Startup Success App Guy:

Here are the 3 things I learned from Derik...
The pleasure of working on your own app startup comes from the effort you put in
Starting an app is all about asking What Is The Problem, Who Is It Solving For, Can You Speak To These People? 
Core metrics to focus on are revenue, retention rate for 1,3,7 days and conversion to paid subscriptions