The Healy is a pseudoscientific device that claims to function via bioresonance, designed by Marcus Schmieke and Nuno Nina.
The Healy claims to work using electricity to find a user's "personalized frequencies", an idea that has no scientific backing or mechanism.
[3] Critics of the Healy device, such as David H. Gorski, have highlighted the lack of scientific rigor behind the machine.
Gorski argues that there is no good evidence to support the claim that injured tissue takes on a “different vibrational characteristic.” He strongly criticizes the belief in a mystical “life energy” that does no work and is undetectable by scientific instruments.
The Office for Science and Society describes the Healy as a “triumph of marketing” due to its claims of using personalized frequencies, which make its claims “unfalsifiable.” David R. Stukus, in an interview with Rolling Stone, commented that any research conducted by the company supporting Healy’s efficacy is likely the result of the placebo effect.