This software can be used to tune a wide range of instruments like guitars, pianos, accordions, organs, flutes and violins. It is even able to tune the two tones of beating instruments, like the accordion, at once. It measures sound using the microphone and detects the tone that is played. The detected tone is compared with the nearest tone in the scale. The deviation of the tone is displayed.

The license of this software is Free Trial Software, the price is $17.8, you can free download and get a free trial.