A free app for Android, by PrimePlex Studio.
Voice Changer – All Sound Effects is an application that allows you to edit audio files with various sound effects, including different accents, and to change the voice to a particular one. It is a free and easy-to-use application that does not require any subscription or special skills to operate.
How to use it?
You can either record a voice and then change the tone, pitch, and speed of the recording, or you can select a voice from your phone’s list of recorded voices.
After recording, you can choose from a list of sound effects, change their tone, pitch, and speed, and then apply them to your recording.
The application also allows you to save your recordings and share them with your friends.