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

I used to used to love this app, simple and straightforward. since the update 4/26 its pretty bad. If you start a session its always at zero even if you choose that you started much earlier. App crashes or refuses to open. If you start a sun session it disappears but it will say its ongoing in history but wont be increasing and no way to stop it. So many bugs. I'll have to find somthing else. Bring back the old version please.

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.

I have used this app daily for about 2 years, March 26 update did not accurately move my history and there's no way to adjust it. There is also no way to accurately see your daily amounts like in the past. Overall it is not calculating properly. Please fix! or go back to older version until you can fix these bugs. very disappointed right now.

What’s new

Polish: History sun-session icon now uses the SunWithD brand logo on a transparent background instead of a generic Material sun icon on a muddy grey square.