GuQin Tuner - Pitch vs 丝桐里 Usage & Stats

[GuQin Tuner] The simple user interface with noise filtering can help you tuning the 7 strings without any setting while activating the APP. When you pull the GuQin string, the pitch will be shown on the panel for the individual string by indicating signal high or low. 
 [Function Description] ▪ Calibrate GuQin Sound : Click on an open string then calibrate the sound with your GuQin. ▪ The following functions are available once you purchase to unlock whole functions: ▪ A4 Frequency adjustment: choose 428~452 frequencies for A4 string. ▪ Total 16 kinds of tuning modes are available. ▪ The scale for precision tuning is 10 cents for every sub-bit. The blue line represents the open strings start from. The green arrow means pitch is accurate and it will turn white once the pitch difference exceeds more than a sub-bit. ▪ The complete function, will visually tell you the pitch is good or not by lighting green or white. Users can easily adjust the string by the lighting arrow shown on the scale. 
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