I wished I didn’t pay for the Pro version
It worked great until it didn’t. I tune through a mic jack (usb head phone adapter on newer iPhones) and now it can’t hear anything aside from the phone’s built in mic. It worked in the past then it stopped working on all of my iPhones and iPads, yet when I tried another tuner app, it works great. So if I stayed on the free version I wouldn’t be out money as I am moving onto a different app.