The ReSound Smart 3D™ app is compatible with the following hearing aids: • ReSound Nexia • ReSound OMNIA™ • ReSound ONE™ • ReSound LiNX Quattro™ • ReSound LiNX 3D™ • ReSound ENZO Q™ • ReSound ENZO 3D™ • ReSound Key™ The ReSound Smart 3D app lets you control your hearing aids directly from your mobile device. You can change programs, and make simple or more advanced sound adjustments and save them as favorites. The app helps you learn what you can do and how to do it. It can even help you f