SimpleSpectrogram displays the voice-print on your phone screen. The voice-print express the strength of each frequency of the voice by the color. It starts as soon as it's launched. So it is very easy to use. If you talk to your phone, you can see the pattern(voice-print) on the screen.
MusicalSoundLab is the developer of SimpleSpectrogram which can be found in the Music & Audio category. The tool has been downloaded and set up by over 10K users and its latest update was released on Nov 26, 2012. This application has the average rating 3.7 on Google Play.
Use the opportunity to get the installer of SimpleSpectrogram 1.4.0 free of charge and read users' reviews on Droid Informer. The app is available for Android 2.2 and higher. The download of the app is 100% secure.