Simple, and much more useful than the confusing, and unreliable Denon app. Once a receiver is setup, people want to change the source, and volume, quickly and reliably. This accomplishes that in a very intuitive and creative way. D&M should hire the developer to fix their failed remote control app. On top of that, I would have paid $5.00 for a good remote like this that works well, and the developer gives it away to the world, ad-free. Thank you sir!!!
Now, a nice feature to add would be to have the ability to make a widget or Siri command that you can one click turn on the receiver and change to a specific input (Sonos Port users anyone?). Maybe a premium feature offering someday, or in-app purchase?? A guy can only hope so. Either way, great work!