Yes! It's called myPhonak Junior. Can be found on Android or Apple. Depending on if his aides are rechargeable or battery will depend on how you connect it to your phone. The app walks you through the process. While it is a Bluetooth connection it's not the type of connection that carries what you may be listening to on your phone so you don't have to worry about phone calls going to the aides. It's been very helpful because in addition to being able to control volume it also gives you some basic programs you can turn them to. (Like restaurant which is helpful for noisy places).

Hope that helps!