This document discusses the benefits of building mobile apps for businesses using Rhomobile, an open source framework that allows developing apps that run on all major smartphones. Rhomobile includes Rhodes, which enables leveraging web skills to build native apps using Ruby, and RhoSync for syncing web service data when offline. The document provides tips for effective business mobile apps like focusing on single tasks, using device capabilities like GPS, and delivering features through rapid iterations. Examples of successfully implemented Rhomobile apps are provided.