dB. Noise Monitor! app for iPhone and iPad

dB. Noise Monitor is a professional sound meter for your iPhone, iPad and/or iPod. dB. Noise Monitor can measure environmental noises in decibels.

dB. Noise Monitor uses your iDevices microphone to measure levels of noise or sound pressure levels and displays measured data in dB (decibels) with reference to generally known noise (provided by American Academy of Audiology).
Microphones in iDevices are made to record human voice, therefore the maximum noise is limited and very loud sounds cannot be recognized (in most cases above 100dB). dB. Noise Monitor is calibrated to be accurate in +/-2.5 dB range of actual noise level and is probably by far the most accurate sound meter in the AppStore. We have adjusted dB. Noise Monitor with the use of professional sound meter used by sound engineers and made required adjustments for many iDevices.

Levels of Noise In decibels (dB) according to American Academy of Audiology (www.audiology.org):
140 dB - Gun shots, fireworks
130 dB - Jackhammers, Ambulance
120 dB - Jet planes taking off
110 dB - Concerts, Car horns
100 dB - Snowmobiles
90 dB - Power tools
80 dB - Alarm clocks
70 dB - Traffic, vacuums
60 dB - Normal conversation
50 dB - Moderate rainfall
40 dB - Quiet library
30 dB - Whisper
20 dB - Leaves rusting
10 dB – Breathing

Why would you use dB. Noise Monitor?
Measure the noise your neighbors make, check new computers, refrigerators, air conditioning units before your buy them for noise levels and select the more quiet ones, to have less noise pollution in your home. Measure how loud your car, motorcycle is. Adjust the sound system for the party you are making to safe levels not to damage peoples hearing. Measure the noise in the apartment, house you are about to buy, it might be too noisy to live in and demand for extra noise insulation. Measure your love ones snoring levels and show them the graph after.
Possibilities are endless, dB. Noise Monitor is a must have app for every iOS device.