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A new type of application which can tell your age quickly.
Let's try if you can hear the mosquito sounds that supposed to be heard in your age group.
Let people around you hear and make fun of the people who can't hear the noise!

Simple to play
Just tap the age group button that you want to test. you can hear the mosquito sound.
if you tap the button again, it stops the sound.

Please be aware that it may make you feel sick if you hear the sounds too much.
For better result, please make a certain space between your phone and your ears.

What is the mosquito?
It is also called the mosquito alarm, an electric device makes high frequency sound.
It is used to get rid of teenagers who are hanging out in public places.
In general, it is said that the high frequency sound can only be heard by people below 25 years of age,
because the ability to hear high frequencies deteriorates in humans with age.