Facebook Sonar vs FLEX: What are the differences?
What is Facebook Sonar? Extensible mobile app debugger. Sonar is a platform for debugging mobile apps on iOS and Android. Visualize, inspect, and control your apps from a simple desktop interface. Use Sonar as is or extend it using the plugin API.
What is FLEX? In-app debugging tool for iOS, inspect and modify views in the hierarchy. FLEX (Flipboard Explorer) is a set of in-app debugging and exploration tools for iOS development. When presented, FLEX shows a toolbar that lives in a window above your application. From this toolbar, you can view and modify nearly every piece of state in your running application.
Facebook Sonar and FLEX can be categorized as "Mobile Runtime Inspector" tools.
Facebook Sonar and FLEX are both open source tools. It seems that FLEX with 10.5K GitHub stars and 1.2K forks on GitHub has more adoption than Facebook Sonar with 5.34K GitHub stars and 292 GitHub forks.