Features:
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■ Direct reading in dB and dBA
■ 30 to 130dB+ (decibels) range
■ Min/Max dB values displayed
■ Time weighting selection
■ Mic calibration
■ Vibrating dB alert
■ Graphing function
■ Meter rotation
■ 2 meter faces
■ 9 backgrounds
■ No full-screen ads
■ Free

NOTE: This app can measure sound level in decibels using your device's microphone located on the bottom. The accuracy of the measured sound level depends on your device's microphone quality and can be improved by calibration procedure described in app's info screen.