[Xc43]

In this case, children 12 and below cannot give consent but they can use the app if parental consent is given.

Having children in that age range use the app would require Audacity to seek parental consent by "[making] reasonable efforts (taking into account the available technology and risks inherent in the processing) to verify that the person providing consent holds parental responsibility for the child."1

While they wrote to minors "please do not use the App", they also wrote "The App we provide is not intended for individuals below the age of 13."2 Not being a lawyer, I cannot talk about the implications of these passages.

src1: https://ico.org.uk/for-organisations/guide-to-data-protectio... src2: link in my parent comment