A free app for Android, by FofadApp.
Exercise Your Voice is a practical voice training application that helps you improve your voice by training your speech, breathing, and vocalization. This app contains easy-to-follow instructions and warm-up exercises that will help you improve your voice. It is very useful for both professional and amateur singers.
The app is designed to help you practice and improve your voice by doing simple exercises that don't require any musical knowledge or instruments. It is very useful for people who want to speak more fluently or for people who want to be able to sing better.