Voice Changer, listed on Google Play by JY Studio, is an Android app for changing your voice. Record your voice or open an audio file, apply effects, convert MP3 to a concert mode, and save, share, or set the result as a ringtone or alarm.
The listing says it contains ads and shows no price and no in-app purchases. It is Android only. The data safety section says audio and app activity may be shared with third parties, and that data is not encrypted and cannot be deleted. The Play listing shows 10K+ downloads.
JY Studio builds sound apps for Android. Voice Changer is meant as a quick, playful way to change a voice recording without complicated editing.