Mostdays

Most Days, Inc., doing business as Deathclock (deathclock.co), operates a consumer longevity platform marketed as Death Clock. Users answer 29 questions to receive an instant life expectancy estimate that the company says is powered by more than 1,200 clinical longevity studies. The estimate functions as a baseline that is refined as users sync blood test results and wearable data. The company offers three blood test panels, with a Baseline panel priced at under $100, designed by its Clinical Board and schedulable at Quest and Labcorp locations across the United States. Results feed into a personalized longevity plan generated by the company's AI, trained on its Clinical Board's framework, covering supplements, medications and early cancer screenings, which the company positions as intended to add 10-15 healthy years of life. The product component described as "The Life Lab" is presented as a system that updates as habits and bloodwork change.

The company previously operated as Most Days, a subscription-based life improvement platform for mental, physical and emotional wellness. That product, launched in alpha in December 2020 from San Francisco, let members follow or create daily routines built by medical experts and other members, covering areas such as depression, anxiety, addiction, obsessive-compulsive disorder, stress, sleep, relationships and general wellness. It combined habit tracking with an opt-in social layer in which members chose whether to keep routines private or share them with an invited support network for accountability, drawing on cognitive behavioral therapy elements and behavior-change frameworks associated with peer support groups. At launch the app was available on iOS with Android planned. Expert contributors of routines included psychologist Joan Davidson, neuroscientist Alex Korb, psychologist Britney Blair and Antoinette Giedzinska of Sierra Tucson.

Founding story

Most Days was founded by Brent Franson, who served as founder and CEO and described the product as an outgrowth of a personal system he had built for himself to improve his health and quality of life; the release describes him as a serial entrepreneur who started his first company in high school.

Business model

The Death Clock offering combines a free or low-cost life-expectancy assessment with paid blood test panels (a Baseline panel priced under $100, plus two other panels) and a personalized longevity plan; the site references a pricing page and account sign-in, and a free blood test offer. The earlier Most Days product was described as a subscription-based platform, with the alpha released to early users without charge.

Revenue is associated with paid blood test panels and platform access; the predecessor Most Days product was subscription-based. Payments are processed through Stripe and Apple.

Traction

The company states that over one million people in more than 100 countries use Death Clock, and that blood tests can be scheduled at Quest and Labcorp locations (cited as 4,500 locations in one place and 4,200 Quest locations in another).

Latest developments

As of the August 2025 privacy policy update and 2025 site content, the company operates as Most Days, Inc. dba Deathclock, offering three blood test panels, wearable and lab data integration, and AI-generated longevity plans, and states a mission of helping 100 million people live 10 years longer.