Is there a Breggz app for customising the Zohn-1, and where can I find it?

Yes, there is a Breggz app! You can download it from the App Store (for iPhone users) or the Google Play Store (for Android users).  

Just search for “Breggz” to find the app. The app lets you customise settings, control sound features, and personalise your Breggz Zohn-1 experience.