Netoced

Netoced is a professional iOS tuner application designed specifically for erhu players and enthusiasts. With an intuitive interface and clear feedback, it helps you quickly and accurately complete tuning.
During the performance, when the pitch is correct, the lines on the screen will naturally converge to the central dashed line, change color to green, and stabilize into a straight line - this is the ideal state (Flatline is good here). If the pitch is too high, the line will move up and display in red; When the pitch is low, the line moves down and is also indicated in red, making the problem clear at a glance.
During the process of adjusting the chord axis, Netoced will display real-time pitch changes, with lines undulating up and down like waves, allowing you to intuitively perceive the effect of each fine-tuning and accurately control the tuning process. Whether it's daily practice or preparation before a formal performance, Netoced can make erhu tuning easier and more reliable.