KQ Voice Changer calling is a professional voice changer application for iPhone that offers a wide range of voice packages. With this app, you can easily change your voice using your mobile phone. Whether you want to sound like the opposite gender, a child, or even a royal sister, this app has got you covered.

The app provides a multi-scene application, allowing you to change your voice during black chats, karaoke sessions, and voice chats. It offers various timbre changes, enabling you to transform your voice from a male to a female, an old voice to a child's voice, and many more.

In addition to the voice-changing features, KQ Voice Changer calling also includes sleep white noise and birthdate calculation functionalities. These features add extra value to the app, making it a comprehensive lifestyle tool.

Please note that the app offers a subscription model for accessing unlimited voice changer usage, sleep white noise, birth calculation, and other functions. The subscription costs $39.99 per year and is automatically renewable after a three-day free trial. Users can manage their subscription settings and turn off auto-renewal through their iTunes account.