At the bottom of https://www.neptuneutilities.com/ site you may see two links:
1) Neptune SystemCare Premier which opens Neptune SystemCare Ultimate page.
2) Neptune SystemCare Ultimate which opens Neptune System Care 2017 page.
So, Neptune SystemCare Premier is Neptune SystemCare Ultimate which is Neptune System Care 2017, so Neptune SystemCare Premier = Neptune SystemCare Ultimate = Neptune System Care 2017 and this means that even people in neptuneutilities have no idea what they offer. Besides, there is really no information about the company.