The idea behind this application is that it will help you track and manage your Vitamin D.

This new version integrates with the Apple Health app to make seamless data exchange possible in the following ways:

* on setup, profile information is fetched from the Health App if the user allows it
* the user's weight (a factor in D generation) is fetched on an ongoing basis, making it unnecessary to update it
* the app will write vitamin D doses, including session information into the Health app

You setup basic information one time, like your height and weight and skin type and then any time you are outside, during the prescribed hours (and parts of the year), you can have it compute the amount of D you are getting in a stopwatch interface. It will also track how long you can stay out and warn you when the time is up.

The application will notify you with the next opportunity to generate vitamin D.

Each day, you can see forecasts based on your location, and you can also see the solar position, your generated vitamin D vs. target etc.

In the Pro version, you can see your exposures' history and you will be able to schedule future events for next exposures.

What's New

Version 5.11

Faster updates on wake from sleep.
Supplement reminders for other time intervals (e.g. weekly).
Now remembers last skin exposure setting for a lamp session.

Coming next, finally a cloud release, if you want to beta test, email us.

Ratings and Reviews

4.4 out of 5

23 Ratings

23 Ratings

Helpful information for getting Vit D from sun exposure

Buff Duff

I have fair skin that burns easily, and I live in an area at over a mile high in altitude, so I've tended to avoid the sun. But I also know that getting sun on your skin is the way we produce Vitamin D, and supplementing it might not do the same thing as producing it naturally.

What to do? Enter dminder. Dminder tells you exactly how long to get sun exposure without getting sunburned, based on your skin type and real UV data.

But it also taught me some things, like that there is a best time of day to get sun exposure, at "solar noon" which changes slightly every day. Also depending on the latitude, you can't produce D from the sun every day of the year, so it's important to get the opportunities that you can.

Overall, an excellent app. I bought the premium version even though I didn't need the additional features just to support the developer.

Love this app


Overall I find this app very beneficial. I would like the ability to see/edit each sun session after it is saved. Sometimes the app stops the session before I want to (maybe because of sun burn alert?). Also wish there were more clothing options. I'm often in a tank top and jeans (at the barn) so feel like I'm getting more sun than it says. Alerts saying when you can start getting sun or reminding you to head outdoors would be helpful too.

Easy & Helpful


Grateful to find this app after a doc found a D deficiency. This app lets you quickly track your sun exposure in all conditions, log your D-rich foods, & enter supplements in any amount. Since I use this app daily, it's nice to have the paid version (probably saved me pill costs too). My favorite health tracker by far!


RobCo, Inc.
38.7 MB
Health & Fitness
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 12+ for the following:
Infrequent/Mild Medical/Treatment Information
© ontometrics 2015
In-App Purchases
  1. DMinder Premium $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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