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

5 Ratings

5 Ratings

Could use some refinement


Great app in principle and I’ve begun using it daily. However, it could use some additional food options such as fortified milk, smoked salmon, and others.

Great app

Gavy C

Fantastic way of tracking Vit D production

Used almost daily since I got it


Good app, very useful and seems very accurate. Haven't burnt my skin at all sticking closely to advised times. Usually shuts itself when I first start the app but then works when I open it a second time. Love the history section although would like to be able to edit sessions that I have saved with a mistake in them. Also love the section showing my target values and real values. Definitely worth getting.


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

    Up to six family members will be able to use this app with Family Sharing enabled.

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