Android App Coding.

I need a Worker to create the following app: It's an App that let's you record 5 seconds of your voice and playback it as a helium voice. There are two options available. 1. medium high pitched, 2. high pitched. Speaking about the UI you can be creative. It just has to do something with a balloon background. Would be nice if you could present me some possibilities. I want two versions of this App. 1. Paid app with full functions and the ability to save the record and share with friends. 2. Free app with just the ability to record your voice and transform it. It will display ads delivered by Admob. Please suggest a good price! Closer things are being discussed after bidding has closed. Have fun bidding!