Works as advertised 5점중 5점 받음

but shouldn't the grey-white bar at the bottom (x-axis) be colored?

At least it woud be a good idea to add an x-axis and y-axis including the basic unit and that are scaled for reference. Otherwise you can't even estimate the frequencies that match a peak value.

이 평가는 현재 부가 기능의 이전 버전 (1.0.0)에 대한 것입니다.