There is an app for that of course :-) - Calcium Pro and Vitamin-d Pro [1] [2] (also for Android users) And please read this article explaining relations betwe

There is an app for that of course :-) - Calcium Pro and Vitamin-d Pro [1] [2] (also for Android users) And please read this article explaining relations between calcium, vitamine D and parathyroid if you have time [3] [1] https://apps.apple.com/us/app/calcium-pro/id587386613 https://apps.apple.com/us/app/calcium-pro/id587386613 [2] https://apps.apple.com/us/app/vitamin-d-pro/id796680824 https://apps.apple.com/us/app/vitamin-d-pro/id796680824 [3] https://www.parathyroid.com/low-vitamin-d.htm https://www.parathyroid.com/low-vitamin-d.htm