Spektroskop 4+

Andreas Wagner

    • 5.0 • 3 Ratings
    • $9.99



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.


+ 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!

What’s New

Version 4.2.7

This update adds support for iPhone 12/Pro and 13/Pro and the latest iPad Air, iPad Pro and iPad Mini models.
Happy measuring!

Ratings and Reviews

5.0 out of 5
3 Ratings

3 Ratings

Nonplussed Tiler ,

Spectro:Skop is Awesome!

I've always had an interest in sound but I bought the app to help analyze a noisy piece of hardware at work. Even using the iPad 2 internal microphone I am extremely impressed with this app. There are enough settings available to make this app truly versatile.

You can capture several audio spectrums making it easy to compare noise/sound under several conditions so you can compare and analyze the differences. You can take a screenshot or export the data in csv format.

I initially had some microphone problems and consulted the developer. I got an immediate email response and the excellent support continued including several additional emails and a video (made for me) to show me what the display should look like. The support of the developer was very much appreciated. Excellent customer support.

This app has a lot to offer both the professional and the novice interested in learning more about sound frequencies and amplitudes. I highly recommend it.

Yul G ,

Quite good

Works well for measuring sound spectra in octave & 1/3 octave bands. Surprisingly accurate... dB(A) and dB(C) values measure within 2 dB of a calibrated type 2 sound level meter at frequencies between 400 Hz and 2 kHz (all bands that I tested), at levels of ~65 dB. Pricey, though less expensive than other options in the app store... and WAY less expensive than a standalone spectrum analyzer. The output .csv feature is quite useful. The developer could improve this function by adding the ability to view/rename/delete files outside of Itunes. Overall a solid app worth the $$$.

To God be the glory! ,

Very Pleased

This has been a helpful and easy to use tool. It makes you wonder why the hardware gear is so expensive. All of them simply get you in the general ballpark then your ears do the rest. I don't believe that getting this app will be a regret if it saves your mix or ears just once. Just my humble opinion.

App Privacy

The developer, Andreas Wagner, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

You Might Also Like