Frequencies - Hearing Test and Dog Whistle

Frequencies is the loudest frequency emitter and dog whistle on the app store. If you need to annoy somebody this app is perfect!
Great for school because the teacher wont be able to hear the higher pitched sounds but the kids will!

Features include:

Full range of annoying sounds (from 20 to 18000 hz)
No Ads
Extremely loud sounds to take advantage of new speakers
Beautiful Simple UI
Extremely Annoying
Great for Parties and School
Hearing Test
Dog Whistle
Full Retina Support
Minimalist Icon