Prepare for motion-heavy trips with a short listening session before you go. This app plays a steady 100 Hz tone, the same class of sound used in published research on motion sickness, so you can follow a simple pre-travel routine. HOW IT WORKS • Select audio output device. Headphones recommended. • Choose how long to listen: 1, 2, 3, or 5 minutes • Tap Start • Check the on-screen volume hint and adjust level if needed For the best experience, use comfortable headphones and a volume similar to normal conversation. Not too quiet, not too loud. IMPORTANT This app is a wellness tool for personal use. It is not a medical device and does not diagnose or treat any condition. Individual results vary. If you have severe or persistent symptoms, talk to a qualified health professional.