I practice playing a Bb trumpet using this tuner, a spectrum analyzer, metronome, and audio recorder. Studying my sound in the frequency and time domains helps improve my playing. This tuner accommodates transposing instruments. For that reason alone I prefer it over some stand-alone tuners that are fixed in the key of C. This tuner drains the battery. At my level of elementary playing, I need the tuner for some length of time (long tones, lip slurs, and so on). Efficient power consumption would be welcome, but not at the expense of functionality. The term "sensitivity" would better than "sensitiveness" in the "settings" menu. Allowing users to upload their own wallpaper would be attractive, because personalizing your tool encourages you to use it and show it off. Thanks for a nice product.