How can I handle the routing in Simplifier? For direct deep links, is there any method to change URL when the tab is changed or to access the direct link via a url ?
you can use query parameters to implement basic routing functionalities. You can read out query parameters on application load and react on them accordingly. E.g https://yourinstance.simplifier.io/appDirect/yourAppName?myparam=foo
Then just use an Autofield to read out your query parameter and react on it within your application logic.