ExhaustSoundChecker

People who like autobike or car think that it wants to measure the exhaust sound.
"ExhaustSoundChecker" achieved such a desire with iPhone.
Application display the average and maximum value in real time during the measurement.
A measurement result is saved at iPhone and can be heard at any time.
"ExhaustSoundChecker" can measure exhaust sound easily. And a measurement result can be heard at any time.

Please think that a measuring result is a reference grade.
Since a measuring result is different by the measurement method etc.