title: Opening TestFlight app from another app and deep link to specific app
body: <p>How do i find the scheme of another app and deep link to it from my own iOS app?</p>
  
  <p>More specifically, I want to deep link to the Testflight app upon certain conditions (set by my code). I'm assuming the person has Testflight installed, (which might be a bad assumption but we can live with that assumption).</p>
  
  <p>I know that on Android, you can query for apps and send intents to deep link to someone else's app. What would be the equivalent on iOS?</p>