Excellent and precise

Very precise, it even shows the overtones perfectly. Excellent for analyzing frequencies of individual tracks in a mix. Its also quite fun to "see" all the sounds around you. I knew there was something electronic ringing in my bedroom that was annoying the heck out of me, and I found it with this app!

Well worth the price.

techgnostic about Spectrogram Pro (with super-smooth 60Hz update)