title: Swift WCSession not reachable and counterpart app not installed (WatchConnectivity)
body: <p>I have an iOS app (MyApp) with a corresponding watch app (MyAppWatch). Using WatchConnectivity, I want to establish a connection between both device. Activating a WC session on both devices is succesful, but when testing the connection, something does wrong. It turns out that my <strong><code>session.isReachable</code> returns <code>false</code></strong>. Also, I get a message that <strong>WCSession counterpart app not installed</strong>. It may be interesting to add that <em>session.isPaired (on iOS) returns true</em>, so nothing seems to be wrong in the connection between the devices. I need isReachable to be true by <em>installing the counterpart app on the watch</em>, before being able to sendMessage(). But how? And why is this failing?</p>
  <p>What I've tried so far:</p>
  <ul>
  <li>Removing the app on both devices</li>
  <li>Cleaning Build Folder</li>
  <li>Restarting XCode</li>
  <li>Adding MyAppWatch.app to the <em>Frameworks, Libraries and Embedded content</em> of MyApp Target</li>
  <li>Enabling and disabling <em>Supports Runnings Without iOS App Installation</em> (MyAppWatch Target)</li>
  <li>All possible combinations of this</li>
  </ul>
  <p>Can someone please help fixing this, I'm struggeling for days now.</p>