Then Mosquitones is the app for you! The popular WebOS app is back! Mosquitones has a Hearing Test & a Freeplay. The Freeplay has 13 different high pitch sounds (frequently called "mosquito tones" or "mosquito ringtones") that can be used to annoy almost anyone. The Hearing Test will guide you through a wizard and give you your results of how high you can hear. These high pitch sounds are often used by teenagers as cell phone ringtones because teachers and other adults cannot hear them.