The document outlines 12 steps for data-driven mobile app development: 1) Collect relevant data, 2) Measure success against benchmarks, 3) Start with identifying questions to answer, 4) Provide actionable data insights, 5) Automate reports and analysis rather than manual work. Key steps also include being proactive, setting milestones, quantifying customer sentiment, learning from mistakes, and taking a long view with relevant sample sizes. The overall goal is to use data insights to effectively drive decisions and ensure app success.