title: Database rule in Firebase: Can we setting each rule for each application in the same project?
body: <p>My project has 2 application. One application just run in a specific mobile device which we known, it interact with firebase without authenication. The another is run in many mobile devices, it must sign-in into firebase to communicate each other.</p>
  
  <p>So my question is how I can configure in Database rule in Firebase, what wildcards I need to use to specify appID like UID? </p>