The Tuner 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 find your hearing aids if you lose them. Tuner device compatibility: Please consult the Tuner app website for up-to-date compatibility information: www.userguides.gnhearing.com Use the Tuner app to: • Adjust volume settings on