Deep links allows you to deep-link users from various different sources directly into your app. Deeplinks also allow you to send your users to some other app directly, with the click of a button. Deep-linking also acts as the base for app-indexing, which allows content in your app to be directly searchable via google. Deep Link Tester allows you to simply test and verify deep links on your android phone itself; ANYTIME, ANYWHERE. Using this, there is no need for ADB at all to test deep links.