Methods, systems, and apparatus, including computer programs encoded on computer storage media, for dynamic rendering for hybrid apps. One of the methods includes receiving user input navigating to a first view of an application; determining, using a navigation hierarchy stored on the mobile device, to render the first view using a native rendering engine native to the mobile device; receiving an update to the navigation hierarchy from a server; after receiving the update, receiving user input navigating to the first view; and determining, using the update to the navigation hierarchy from the server, to render the first view using an open rendering engine that is not native to the mobile device.