Spektroskop

Add precision to your pocket! Spektroskop is an easy-to-use yet powerful real-time spectrum analyzer, which takes accuracy seriously.
Analyze, measure, compare and save sound spectra captured with the internal microphone or any other audio source connected to your iOS device. The built-in microphone calibration for iPhone and iPad even allows to measure absolute sound pressure levels (SPL) with high precision.
Spektroskop is the perfect tool for sound engineers, acousticians and everybody else with eyes and ears.
FEATURES
+ real-time, high accuracy FFT analysis from 20 Hz to 20 kHz
+ built-in microphone calibration for all iPhone and iPad models
+ built-in calibration and frequency equalization for the MicW i436 microphone
+ built-in calibration and frequency equalization for the Microtech Gefell M372 microphone
+ free field and diffuse field equalization for all internal iPhone microphones and MicW i436
+ frequency weighting dB(A) and dB(C)
+ time weighting Fast, Slow and Average
+ optional octave and third-octave band display
+ hold and compare function for up to four spectra
+ adjustable decay rate and averaging function
+ CSV data export to iCloud Drive, Dropbox, Numbers, etc.
+ universal App for iPhone and iPad (limited support for iPod Touch)
Visit http://SpektroskopApp.com for more detail!