Our mission is simple: move people from vitamin D deficiency into sufficiency — and keep them there.
Most health apps count users. We count something more meaningful: days that a human body had enough vitamin D to function properly. Every day a D-Minder user stays above 30 ng/mL is a day their immune system, bones, and mood had what they needed.
Here's how days of sufficiency add up:
At 100,000 users with the same rate, that's 29.2 million days — nearly 80,000 years of human vitamin D sufficiency, created by an app and some sunshine.
42% of US adults are vitamin D deficient. That's over 100 million people walking around with suboptimal immune function, bone density, and mood regulation — most of them without knowing it.
The solution is literally outside their door. They just need to know when to go out, how long to stay, and when to stop.
D-Minder doesn't just track — it changes behavior:
"No one would buy a security system that only worked some nights of the year. Yet most people's vitamin D defense is exactly that — active in summer, absent in winter, and unreliable year-round."
Getting to sufficient vitamin D levels is important. Staying there every day of the year is what actually matters. When your vitamin D drops, the consequences cascade:
D-Minder's job isn't just to help you reach sufficiency — it's to keep you there, every single day, through every season.
In the future, this page will show real, live data:
All data will be fully anonymized and opt-in. Your health data is yours. We only count the aggregate impact.
Join the community of people taking control of their vitamin D. Your sufficiency days add to the count.
Download D-Minder