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. 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 for more detail

Spektroskop alternatives

dBMeter Pro

This application measures ambient noise in decibel using the built in microphone of the iPhone 4S, 5, 6 and 7 series. Also works on iPod Touch 5. The author can not be held liable for any damage which might arise by using dBMeter Pro.

  • size 2.6 MB


SignalScope turns your iOS device into a powerful real-time spectrum analyzer and oscilloscope. Easily measure audible frequencies in SignalScopes FFT analyzer. Includes support for additional engineering units (V, A, m/s^2, m/s, g, ips), which are assignable to audio input channels.

  • size 9.5 MB


Vibration is a true vibration spectrum analyzer using the built in accelerometers and gyroscope inside the iPod Touch and the iPhone and starting with version 3.x it can sample the built in microphone and the Digiducer professional quality external USB accelerometer. It acquires and displays time series data, optionally removes DC bias, applies a Hamming window and performs an FFT on each channel to produce frequency spectra. Please use the email links in the program to request new features and report any problems.

  • size 9.6 MB


Research points to SoundMeter as the best sound level meter app available on any mobile platform:The evidence suggests that for A-weighted data, SoundMeter is the app best suited for occupational and general purpose noise measurements. In addition to having the smallest mean difference for the A-weighted data, SoundMeter had the narrowest distribution of differences. Contact a qualified acoustical testing laboratory for information regarding standards certification.

  • size 11.2 MB


RadioactivityCounterThis application is a real working radioactivity counter without any extra hardware needed It will turn your phone into a Geiger Mller Counter to measure radioactivity after proper calibration. Attention after upgrading iOS to a higher iOS do the calibrate again, as camera data properties might have changed Disclaimer: The type of radiation picked up by the camera can be dangerous/detrimental to the users health as well as cause damage to the device. * = Attention some phone might not be compatible due the new version of iOS or missing features (gps precision using sim cards)- please try to use an older rev of the App which should be available according to my settings (1.3).

  • size 11.6 MB