Tether, the company best known for its USDT stablecoin, has officially launched QVAC Health, a privacy-focused health and wellness platform that leverages on-device AI. The unveiling on December 10, 2025, signals Tether's continued expansion into decentralized technology and artificial intelligence, moving beyond its core business in the cryptocurrency sector.
QVAC Health aims to address the growing concerns surrounding data privacy in the health and wellness industry. The platform allows users to consolidate their health data from various wearable devices and apps into a single, encrypted dashboard that operates entirely on their devices. This approach ensures that sensitive user data, including fitness metrics, sleep patterns, nutrition information, and biometric data, remains private and is not transmitted to external servers or used for advertising purposes.
A key feature of QVAC Health is its use of on-device AI, enabled by Tether's QVAC platform, which stands for “Local AI. Infinite Intelligence. No Compromise”. This technology allows the app to perform sophisticated data analysis, such as identifying workout patterns, tracking nutrition, and analyzing symptoms, directly on the user's device without requiring an internet connection or reliance on cloud-based services. The platform also incorporates experimental computer vision capabilities, enabling users to log their meals by simply taking a photo, with the AI instantly estimating caloric intake and macronutrient breakdown.
According to Tether, future updates to QVAC Health will include direct Bluetooth connectivity to fitness devices, allowing the app to bypass manufacturer APIs and cloud services entirely. This would give users even greater control over their health information while maintaining compatibility with existing wearables.
The launch of QVAC Health is part of Tether's broader strategy to diversify its business and infrastructure through Tether Data and the QVAC AI initiative. In early December 2025, Tether Data introduced QVAC-fabric-llm infrastructure, which is described as a solution for training large language models directly on consumer devices. This technology eliminates dependence on centralized cloud providers and allows AI models to operate without internet connectivity.
Tether's increased focus on AI is also demonstrated by its recent investments in several AI-related companies. In November 2025, Tether partnered with Northern Data and Rumble to lease 20,000 GPUs for AI research and development. Tether also invested in Generative Bionics, an Italy-based company that develops intelligent humanoid robots, and acquired a majority stake in Blackrock Neurotech, a brain-computer interface company.
"QVAC Health reflects the company's commitment to privacy-preserving local intelligence," said Tether CEO Paolo Ardoino. "You shouldn't have to choose between using the best hardware on the market and maintaining your privacy. We are breaking down the walls between Big Tech ecosystems so you can own the full picture of your health".
The launch of QVAC Health signals a potential shift in the personal wellness technology landscape, with a growing emphasis on user control and data privacy. As AI capabilities continue to advance and privacy concerns escalate, applications that operate independently on personal devices may become increasingly appealing to health-conscious consumers.
