Install TestFlight on   app on the iOS device that you’ll use for testing.

Open your invitation email or and tap on the public link on your iOS device.

Tap View in TestFlight or Start Testing; or tap Install or Update for the app you want to test.

Click on the Beta app Link that you have received in Pulsar Notification Email.

Click on Download button.

Once appxbundle file is downloaded on your device, Click on the file.

Click Install button to Install Pulsar Beta app on your device.