AI is the big buzzword in health tech at CES 2025. Everywhere you look, you’ll find AI algorithms, AI health recommendations, and AI chatbots . The fact is, AI has a reputation for inventing things – and when it comes to health, the stakes for accuracy and privacy are high.
That’s why smart ring manufacturer Movano wants to clarify one thing about this It is new chatbot, EvieAI: this was post-trained exclusively on peer-reviewed medical journals.
EvieAI was designed to be a more accurate alternative to something like ChatGPT. The difference is that, unlike ChatGPT and other similar generative AI assistants, EvieAI theoretically will not take advantage of large public data repositories where misinformation about health and wellness is rife. According to John Mastrototaro, CEO of Movano, it has been trained and will be limited to more than 100,000 medical journals written by medical professionals.
All data the LLM has access to comes from accredited sources referred to by a medical advisory board, says Mastrototaro. This includes FDA-approved reviews, practices, and procedures. EvieAI is a limited LLM, meaning it will only talk to data in the “post-training” phase after its initial creation. In this case, it is medical data. The data is then cross-referenced with organizations like the Mayo Clinic, Harvard and UCLA. To do this, the LLM references this external data before responding and ensures that there are no conflicts.
The result, according to Movano, is 99% accuracy, although we weren’t able to test EvieAI ourselves before CES. The company says this is possible because every time you query EvieAI, the LLM tracks to see if the information provided in the conversation is consistent and accurate to the data it was trained on.
Achieving this level of precision is a significant challenge and a bold claim. Most chatbots do not make reliable and accurate claims, and some specifically avoid health and medicine precisely because the stakes are so high. However, when I ask about AI’s tendency to hallucinate, I am firmly told that Movano is not afraid of EvieAI telling users that it has no answers.
“If you ask him, ‘What do you think about the elections?’ he won’t answer,” Mastrototaro says. “He won’t tell you because he doesn’t have any information about it.”
“I think it’s okay to say no if you don’t know the answer to something,” he adds. “And I think sometimes with the other tools available, they’re going to respond one way or another, whether it’s good or bad. We will only give an answer if it is correct.
EvieAI is meant to be a conversational resource that gives clear and concise answers to health and wellness questions, with a focus on women’s health (much like the company’s Evie Ring).
However, health, wellness and medicine are an ever-changing landscape. Even peer-reviewed studies can present conflicting results. Doctors don’t always agree on emerging science. Healthtech overall has also avoided anything that could be considered a diagnosis or medical advice — something that would require FDA oversight.
To this end, Mastrototaro says the LLM is updated monthly with new approved materials such as medical journals and articles detailing advances. He also emphasizes that EvieAI avoids any diagnosis. The AI will not engage in treatment but will act more as a guide that will ask clarifying questions to point you in the right direction. For example, if you suspect that you may have diabetes, they may ask you questions to clarify whether you have suffered from low vision or weight gain, as well as ask about your diet. But if you tell him you cut your finger or express that you are having suicidal thoughts, he will direct you to the emergency room or to the number to call an appropriate hotline. The hope is that EvieAI can help people research better and prepare for a doctor’s visit in a more natural and supportive way than, say, falling down a WebMD rabbit hole.
Regarding privacy, Movano claims that EvieAI will follow industry standard encryption standards for storage and transmission and that no discussions can be traced back to individuals. Mastrototaro also says that conversation data will be periodically deleted and will also not be used for targeted advertising.
It can be easy to roll your eyes at health technology’s promises of privacy and accuracy. Movano has thus far demonstrated fierce dedication to adhering to the best practices and standards of the medical industry. It recently received FDA clearance for its EvieMED ring, an enterprise version of its ring intended for remote patient monitoring and clinical trials. Movano also recently relaunched the consumer version of its Evie Ring to better address early customer feedback, such as better sleep and heart rate accuracy.
In the future, Movano hopes to further integrate individual health data collected by its smart rings. But for now, a beta version will be rolled out starting January 8 for existing Evie Ring users within the Evie app, at no additional cost.
