A free program for Android, by WorkerBee App.

Voice Changer – Audio Editor is a free app that lets you change the audio in your recordings with a variety of effects. You can even add effects such as the ones that you find on the voice changer app. It is a very simple app to use, and it is easy to download and install. You can use it for a variety of purposes, such as making a joke or recording a message for your friends. You can even add a variety of effects to your recordings, such as a baby voice, an elderly person, and a monster.