Erhu Tuner - Pitch is a specialized multimedia application designed for iPhone users to enhance their erhu playing skills through precise tuning, metronome functionalities, and pitch practice. The app features a simple interface that allows users to access its three main functions: pitch practice, metronome, and precision tuning. It offers support for various tone selections and frequency adjustments, making it suitable for both beginners and advanced players.

The pitch practice mode includes a unique visual feedback system that displays the correct pitch position, which helps users improve their sense of pitch while playing. The metronome provides an intuitive interface with 18 beat types and customizable settings, allowing for effective rhythm practice. Additionally, the precision tuning feature supports multiple tuning modes and real-time feedback, ensuring users can tune their instrument accurately and efficiently.