HealthGeist is a Solaran Union direct-sales corporation that offers AI-enhanced medical technology and "Temporal Thermometers." They are headquartered in a residential block on Earth.
Known principally for their HMK-2 Improved Blood Pressure Cuff and DEP-3 Temporal Thermometer, they offer their products directly to consumers via SD card deliveries, AV message transmissions, and simple broadcast-transmit textfiles. Their profit seems to be in a referral bonus, or a kickback, or advertising revenue, or... maybe they own the company that manufactures the product, too? Sources are conflicting and the truth is unclear; this is seemingly by design.
Trivia
HealthGeist was founded through a temporal causal loop error, when on 14 May 2020 the original founder of the company received a garbled "spam" email, from the company, which did not at the time exist. This email inspired the founding of the company, thereby closing the loop.
