The Perfect Vocal Free is an Android app to check you?re vocal. This app will auto tune your voice to the key of your choice. The best features are it can change the correction speed, set the recording as a ringtone, it automatically corrects the pitch. In this app you can re- process any recording to a different pitch without re- recording. You can also import vocal tracks recordings from any other devices. It?s easy to convert the recording to MP3 format and easy to share too. It also imports background tracks from your phone to sing along. The recording is easy to upload on facebook.