PitchTrainer: Music Tuner app analytics for December 19

This is an application that you can practice the pitch of an instrument as if you were playing a game. Tune the instrument on the tuner screen and Check the pitch with a polygonal line on the training screen. The correctness of the pitch is displayed in three colors: green, yellow, and red. function -Detects C1 (32.7Hz) to E7 (2637Hz). ・ Pitch detection is performed 5 or 10 times per second. ・ The reference frequency can be selected from 438Hz to 446Hz. ・ Equal temperament and just intonation can be selected (Tuner is always equal temperament) ・ Permission to use the microphone input is required. Please set at the first startup.