I use "UVIMate" app to provide a general ballpark figure on how much time I should spend under the sun: https://play.google.com/store/apps/details?id=au.com.ae

I use "UVIMate" app to provide a general ballpark figure on how much time I should spend under the sun: https://play.google.com/store/apps/details?id=au.com.aershov.uvmate https://play.google.com/store/apps/details?id=au.com.aershov...