In this chapter, we introduced hybrid mobile applications. This underlines the true flexibility of JavaScript ArcGIS applications. Not only can we build cross-platform, cross-device ArcGIS applications that run in a browser, we can also build installable apps that can be distributed to the various app stores. The bulk of the chapter was spent walking through the setup rather than coding, since setup can be very confusing and frustrating. By spending additional time here, we hoped to help readers through this maze. After the setup, we provided a simple ArcGIS code example. Additional samples were also provided that showed different functionality. In this chapter we really only touched the surface of ArcGIS hybrid application development. We encourage readers to take what they have learned in earlier chapters and venture further into the world of hybrid ArcGIS app development with PhoneGap/Cordova.