Apps like Noise Tracker

Here are some great alternatives to Noise Tracker by CSIR - NEERI | S.K.Lokhande & Mohindra C. Jain :
Decibel Meter: Sound dB Meter
Decibel Meter: Sound dB Meter
★4.7
Decibel Meter-Sound Noise Test
Decibel Meter-Sound Noise Test
★4.1
Decibel Sound Noise Meter
Decibel Sound Noise Meter
★4.4
Sound Meter - Noise detector
Sound Meter - Noise detector
★4.4
Sound meter : SPL & dB meter
Sound meter : SPL & dB meter
★4.8
Sound Meter
Sound Meter
★4.6
Decibel Meter - Sound Meter
Decibel Meter - Sound Meter
★4.6
DBA Sound Meter: Sound Measure
DBA Sound Meter: Sound Measure
★4.0
Noise Detector: Sound Detector
Noise Detector: Sound Detector
★3.8
Sound Meter
Sound Meter
★4.2
Sound Meter
Sound Meter
★4.5
Sound Meter - Decibel Meter
Sound Meter - Decibel Meter
★3.6
Sound Meter - Decibel Meter
Sound Meter - Decibel Meter
★4.0
Sound Meter - Decibel Meter
Sound Meter - Decibel Meter
★4.8
Sound Meter - Decibel Meter
Sound Meter - Decibel Meter
★4.7
Perfect Sound Meter
Perfect Sound Meter
★4.1