D-Minder

ontometrics

In-app purchases

About this app

D-Minder helps you maintain optimal vitamin D levels by tracking sun exposure, supplements, and dietary intake. Using real-time solar position and satellite ozone data, D-Minder calculates how much vitamin D you produce during each session.

Ratings and reviews

This used to be a great app. I used it for over two years with no problems. During that time, the tracked numbers would be within a couple digits of my Vitamin D lab test results. That was pretty amazing. Since it was updated, this app no longer functions properly except as a supplement tracker. You can't track a live sun session. Adding prior sun sessions don't accurately reflect the correct IUs obtained. Inputted lab results, erroneously throw off the tracker.

Lots of bugs since update. I started a session today and could not stop the app. I tried for stopping, restarting my device and the only way I could get it to stop was to actually uninstall and then reinstall the app. Also, the amount of vitamin d does not correlate with the amount that it says you're getting per minute and the time that you're outside? It's consistently showing much less than if you do the math.

Used to love this app. Has been unusable since I updated on March 9th, 2026. No new sun sessions save. When you record a sun session and hit end, it just keeps beeping until you have to force close the app and then your session is gone. Horrible when you have earphones in. You can't even adjust the notifications you want to receive, you're forced to get all of them. You can longer input your own daily goal for IUs. I want the old version back.

What’s new

• New supplement wizard: pick your product (Centrum Silver, Nature Made, Kirkland and more) and the vitamin D amount fills itself — no more label math
• Optional daily reminder for your supplement, with your choice of how an unanswered reminder counts
• Single doses up to 300,000 IU now record — supporting prescribed high-dose protocols like 60,000 IU weekly sachets
• Daily amounts are bounded at safe ongoing levels, and both limits now come from one shared core on all platforms