What is the app that makes you sound like a chipmunk when you record a video?

Recently, I've been seeing tons of videos of people recording for about 30 seconds and they sound like a chipmunk. I don't know if it's JUST for the iPhone or for Android, but I'm trying to find out what it is. Can someone give me the name of the app?

The app i use is called Helium Video Booth, there's a free version and a paid version. The paid version allows you to adjust your tone to really low or really high. Though on the free version you still sound like a chipmunk. This app is on apple devices, I'm not too sure if its on any others. Hope this is the app you're looking for!