Use Funny Call to change your voice during a live call! The best prank call app. Over 2.5 million apps downloaded! If you are looking to make a great crank call / prank call, this is the best app. Use Funny Call to change your voice during a live call! Perfect to make a Santa Call for the holidays, the best Christmas app! Sound like a creepy man, woman, alien, chipmunk, and more. Trick your best friend or your worst enemy. Call your girlfriends, boyfriends, parents, children and even your boss! You'll have everyone guessing and laughing for hours. Lots of crazy and fun voice effects like Alien, Cyborg, Ransom & Echo. Pro-Audio effects transform your voice during the phone call