Y-Ears is a web app — you won't find it in the App Store or Play Store.
Add it to your home screen for the best experience.
Open the app in Safari
Go to app.y-ears.com in Safari (not Chrome or another browser).
Tap the Share button
Look for the square icon with an upward arrow at the bottom of the screen.
Tap "Add to Home Screen"
Scroll down in the share sheet until you see this option.
Tap "Add"
Confirm in the top right corner. The Y-Ears icon will appear on your home screen.