Apple users can search for "NoiseLab" in the App Store to download and install it. Currently, two versions are available:

NoiseLab-Lite (Free Essential Version) 

      ● Meets the basic measurement needs of regular sound level meters and integrating sound level meters. 

      ● Supports built-in and external microphones (the external microphone offers three adjustable gain levels). 

      ● Supports arbitrary combination measurements of Z, A, B, C weighting filters and multiple time detectors including Fast, Slow, and Impulse. 

      ● Supports sound pressure level calibration (can use a standard sound calibrator or manually input calibration factors). 

      ● Able to save historical measurement data of sound pressure levels and conveniently export reports. 

      ● Some professional functions such as audio data analysis, noise evaluation curves, loudness, and sound exposure can be unlocked through in-app purchases. 

NoiseLab (Professional Enhanced Version) 

      ● Includes all the basic functions of NoiseLab-Lite. 

      ● Adds professional acoustic analysis functions such as octave analysis, FFT spectrum analysis, and multi-parameter sound level meter. 

      ● Supports simultaneous display of measurement results from three groups of configurations, meeting the needs of comparison across multiple scenarios. 

      ● Historical data and analysis results can be saved and compared, facilitating tracking and analysis. 

      ● It is suitable for higher-precision, more diversified acoustic testing and noise analysis in professional environments. 

      ● This version is available for paid purchase, and all advanced functions will be unlocked after a one-time payment.