I'm currently using a Branch link on my company's website.
My Android application currently uses a custom WebView with the following user agent:
Kik/9.1.0.3591 (Android 6.0) Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36
Whenever I click on the branch link from the custom WebView, the Android OS will always open the Splash screen of my application, then link me directly to the Play Store.
If you need more details on my setup let me know!