The TENS pain function of Healy rests on a technique with decent evidence. For the IMF frequency programs there is no independent evidence, and Healy says so on its own product page.
Does Healy work? The short answer
That depends on which part of Healy you mean, because the device does two different things.
Pain relief through TENS. This is the part with real backing. FDA file K191075 clears Healy for temporary relief of sore and aching muscles and for chronic, intractable pain and arthritis pain. A 2022 meta-analysis of 381 randomised trials found moderate certainty evidence that TENS lowers pain during or right after use compared with placebo. That evidence is about TENS as a technique, not about Healy as a brand.
Healy's own study. There is one published study of the device: an observational study in Medical Devices (2023) that followed 249 users for six months. Quality of life scores went up. But there was no control group, the participants had already used Healy for at least three months, one author works for Healy and the other received consulting fees from the company. The authors themselves say a placebo effect plays a part.
The IMF frequency programs. This is what most people buy Healy for, and the evidence is missing. Healy's own Obsidian product page says the idea behind it "has not been confirmed by independent studies" and that the IMF programs "are not medical applications".
So if a review tells you Healy is proven, ask which function it means. For TENS, the technique is supported. For the frequency programs, nobody has shown it, the manufacturer included.
Why I can write about this
I owned a Healy Gold for about a year before building ResoField. That experience helps me explain how you work with it day to day, but it is not clinical evidence. The documents above weigh more than my impressions.
What the Healy is
Healy is a wearable electrical stimulation device used with a mobile app. The current Healy Obsidian page advertises more than 280 programs. Product bundles and prices differ by country and can change, so the earlier fixed table for Gold, Holistic, Resonance and Professional is no longer shown here.
Check the official shop in your region before buying. Ask for the exact device, included program groups, subscription terms, return terms and total price in writing.
What the FDA file covers
The correct United States FDA file is K191075. It covers TENS use for temporary muscular pain and for the symptomatic relief and management of chronic intractable pain and pain associated with arthritis.
This is a 510(k) clearance for those stated uses. It is not a general FDA approval of IMF, resonance analysis or broad wellness claims. The earlier link on this website pointed to K192455, which concerns Merge PACS and was incorrect.
IMF claims need a separate assessment
Healy distinguishes its physical electrical stimulation functions from IMF programs. On its current Obsidian page, Healy says the effect of IMF has not been independently confirmed and that IMF programs are not medical applications.
That limitation is important. Evidence for TENS in defined pain settings cannot be used as proof for every frequency or information field claim offered in the same product ecosystem.
Healy and ResoField do different jobs
Healy provides physical electrical stimulation through dedicated hardware. ResoField is a browser application for reference libraries, client profiles, custom lists, protocols and planning. ResoField produces no audio, electrical current, PEMF or other physical device signal.
Choose Healy if you specifically need the documented hardware function and have checked its current terms. Choose ResoField if you need a free software workflow for organising reference material and practitioner work. Neither choice replaces medical diagnosis or care.
Sources
Johnson et al. (2022), Efficacy and safety of TENS for acute and chronic pain in adults, BMJ Open
Product information and prices can change. Sources were checked on 11 October 2026. This article does not provide medical advice.
Matt
Matt is a software developer and self-taught homeopathy practitioner who founded ResoField in 2025. Together with his wife, who runs a resonance therapy practice, he has 7+ years of hands-on experience and 100+ clients treated. With personal experience using devices like QEST4, Sulis, and Mora, he bridges the gap between IT and holistic health.
