Ultrasound
Most adults cant hear the ultrasound.
But it is so annoying for most young, animal, insect.
It is depending on your earsight，now use this app to test which frequency can you heard
#Features:
Long press set as ringtone
Play time setting
#Last Update:0924
Add description of test results
App Specification
- App Name: Ultrasound
- Rating: 3.97
- Apk: com.feasy.app.sound.ultrasound
- Cost: Free
- Developer: http://www.google.com