We can quickly distribute app to a specific set of beta testers over-the-air immediately with Test flight. In the below short note, I listed 4 simple steps to begin with Test Flight. Step 1: ’Test Flight’ app needs to be installed in the iPhone device & login to Apple account mail (Previously shared with Developer) in the same. App Store download link Step 2: Whenever a developer publishes a new build (via iTunes connect panel), All testers will receive an invitation mail from Test Flight. Step 3: After invitation accepted, Open the test flight app, install test build.  Example for step 2 & 3 ( Image Source : Appcoda) Step 4: Now we can start testing the app. In case any future app build updates, testers will receive notifications. That's all. Hope these steps will help new testers & promises a great quality app in the app store.
Mobile App Developer | Technopreneur