A free program for Android, by Design Space Studio.
This app allows you to change the pitch and speed of your voice. You can choose from various effects such as a flat tone, natural, and also a five-year-old girl's voice. You can also choose from ten-year-old and older girls' voices. You can use this app as a prank to make fun of your friends.
How to use
1. Choose the voice effect that you want to use. You can use the effects that are available in this app.
2. Press the Record button.
3. Now, you can record your voice and apply the effect that you want.
4. You can share the recordings with your friends.
This is a free app, and there are no extra costs. You don't need to pay to use it.