Sonic Master is an iPhone application developed by 东海 刘. It offers an exquisite sound wave generator that allows users to produce sounds of specified frequencies. With a simple slide of the finger, users can easily control the frequency of the sound wave.

The application provides various waveforms to choose from, including sine wave, rectangular wave, triangle wave, and sawtooth wave. Users can tune the sound wave to their satisfaction and even export the audio file.

In addition to its sound wave generator, Sonic Master offers several other features. It includes a drain feature that uses sonic vibration to remove water from mobile phones without the need for disassembling. The application also has a dust removal feature that utilizes resonance to eliminate dust and iron powder from the phone's speaker, improving its sound quality.

Sonic Master also includes a focus timer based on the Pomodoro Technique, helping users be more efficient by focusing for 25 minutes and then taking a 5-minute break. It also has a music timer that plays soothing music to aid in sleep.

Furthermore, Sonic Master offers a collection of high-definition sounds of nature, allowing users to create a calming environment with sound scenes such as forests, flowing water, distant mountains, and more. Lastly, the application includes a decibel meter to measure environmental noise and raise awareness about noise pollution.

Sonic Master - Dust Clear is a free application available in the Education & Reference category on the iPhone platform. It provides a range of useful features for sound manipulation, phone maintenance, productivity, and relaxation.