Pink noise is a sound with a frequency band characteristic similar to that of natural environments such as the sound of rain or a waterfall. Due to its characteristics, it is expected to reduce surrounding noise and improve sleep and concentration. Some studies have shown that pink noise improves sleep quality, and it is attracting attention as an environmental sound suitable for studying and meditating. This app has the following features to achieve both a comfortable use experience and reduced load on the device: Efficient noise generation: Generates a short amount of noise at startup and repeats it to reduce the processing load on the device. Selectable sample rate: Supports sample rate switching to adjust sound quality and battery consumption. Free sound quality adjustment: From white noise to pink noise, you can adjust the sound quality to your preference using the seek bar. Simple design: With a simple and intuitive UI and background playback support, it is ideal for long-term use. Enjoy a more comfortable sleep and a space to concentrate through this app.