How do I begin a user test from the InVision Viewer app?

When editing a mobile prototype in InVision, you can send out a User Testing link to your tester. When they visit that link on iOS, they'll automatically be taken into the InVision Viewer app and the user test will begin. If they don't have the app installed they'll be taken to the App Store so they can install it. Click here to learn more about User Testing.