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. Access any live object via a scan of the heap. View the file system within your app's sandbox. Browse SQLite/Realm databases in the file system. Trigger 3D touch in the simulator using the control, shift, and command keys. Explore all classes in your app and linked systems frameworks (public and private). Unlike many other debugging tools, FLEX runs entirely inside your app, so you don't need to be connected to LLDB/Xcode or a different remote debugging server. It works well in the simulator and on physical devices.