The document discusses how to calculate the return on investment (ROI) of enterprise mobile apps by outlining the process of determining costs and benefits, providing examples of quantifying productivity gains and cost savings, and presenting a case study that calculates a 5.8x ROI for a Blackberry deployment over 3 years based on productivity gains of $6600 per user per year and average annual costs of $1120 per user. Key considerations for accurately calculating ROI and increasing benefits are also covered.