Guzheng tuner

I purchased this app for its ability to tune my Guzheng. I just tried it. It is pretty good. However, it can only tune Guzheng in D major, for there are A, Bb, C, F, and G which was not covered in the app. If they can re-incorporate the rest of them I listed above, then it would be perfect!

Ysshasha about TACTSON TUNER MASTER