a user-friendly voice pitch analyzer

DON'T BID BEFORE READING THE DESCRIPTION I need to build a computer based tool where the users can record their speaking voices and get the voice pitch analized (visualized). Similar function is in some app and software such as Praat. But Praat is too complecated. I only need the function to anylze the spectrum and get the pitch visualized. I need it to be a computer instualled app, or a normal web app, whichever more economic. You can use the Web Audio API or Github (Praat is an open source app on Github)and whatever technique you want but to do it quickly. Please start your bid with "pitch" to know that you read the description.