A-Tuner is a chromatic tuner corresponding to any instruments and boasting the highest level of accuracy among many similar applications.

Precise tuning in increments of 0.1 cents is possible with the strobe tuner like display.
It also has high precision electric tuning fork which is convenient for training with tuning with ears.

In the Lite edition, advertisements are displayed, and the following functions are not available.
・Transposition
・Note name notations (English, German, Dutch, French, Italian)
・Pitch selection mode (automatic / manual)
・Simple metronome
・Classical temperaments (Pythagorean temperament, 1/4 comma meantone, Pure intonation etc.)