R Voice Changer is a real-time voice changer app developed by Kumao.Works available for Android users. With this app, you can change your voice from male to female in real-time. Not only can you adjust the pitch of your voice, but you can also adjust the formant to create a more natural-sounding voice. Unlike other apps that produce suspicious-sounding voices, R Voice Changer produces natural-sounding voices. However, the app is still in the development stage, and there may be some noise when using it. Also, some devices may not be compatible with the app.

R Voice Changer offers several features such as the ability to convert your voice from male to female in real-time, with a delay of 300ms to 600ms. You can easily convert your voice to your desired pitch and formant using presets. The app also allows you to save and share your converted voice as an AAC (.m4a) file. However, the app can only record up to one minute of audio.

It is important to note that you must use headphones when using the app to avoid feedback. The app may also produce noise due to its developmental stage. Kumao.Works does not provide support for the app, so users are advised to use it at their own risk and within their own comfort level.