To change your voice with Voice Changer - Voice Effects, all you have to do is record your voice in that moment or choose a voice memo saved on your smartphone. From there, the app has a menu of possible filters so you can equalize and alter the tone of your voice.
With Voice Changer - Voice Effects, you can choose various effects, such as a kid, robot, giant, and drunkard. You can even make it sound like you're talking from the top of a mountain or inside a cave.
If you want to have some fun modifying your voice with just one app, Voice Changer - Voice Effects is a great way to do just that without running into any problems.