Change your voice and prank your friends.
Change,modify,alter your voice with an array of different effects (female, child, male, tunnel) that can be combined together.
This voice changer is the tool you are looking for. Please note that this application can not change your voice during a call as this is not technically possible on android.
Once you’re satisfied, you can save your altered voice, e-mail it to your friends, and even set it as a ringtone.
Android: 2.2 +