Volume Booster: Sound Louder is a free iPhone app developed by Li Jingyuan. It falls under the category of Multimedia, specifically Music & Radio.

If you find that your iPhone's volume is sometimes too quiet, Volume Booster is the solution you've been looking for. This powerful and intuitive app allows you to instantly increase the volume of sound on your device. With Volume Booster, you can enjoy a louder and clearer audio experience on your iPhone.

The app is easy to use and provides a seamless way to boost the volume of your device. Whether you're listening to music, watching videos, or making phone calls, Volume Booster ensures that you never miss out on any sound.

Please note that the app is free to download and use. To learn more about the app's privacy policy and terms of use, you can visit the following links: