Works as advertised Bedømmelse: 5 ud af 5 stjerner

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.

Denne anmeldelse er af en tidligere version af tilføjelsen (1.0.0).