【實用娛樂app】Stealth Tones|最夯免費app-綠色工廠好玩App

Stealth Tones is the perfect way to annoy everyone in earshot!Stealth Tones plays high-pitched, screeching tones that cannot be heard by adults of different ages. This app is capable of playing 5 different tones that are only heard by people under:- 24- 30- 40- 50- 60Adults can not hear the tones, so its perfect for keeping away annoying children. You could even use it in a classroom to annoy your classmates - without the teacher knowing! Please note that not every human being is the same, and that the ages in the app attempt to represent an average person's hearing. Results may vary.