A New Nutrient Calculator?

I don't really have to use the Advanced Nutrients Calculator anymore, though it was a godsend in the beginning of my growing career, but it looks like they have a new one now.

http://www.advancednutrients.com/hydroponics/calc/

Anyone check it out and tell me if it's worth using? I have a pretty good system going on right now, so I don't want to make any changes unless someone's seen some vast improvements...of course, it seems that it's sorta new (I haven't been to the site in ages), so maybe no one has tried it yet.

Its extremely new, and based on "bundles" that wont be released for atleast 2 months. So I dont think your gona get alot of feedback on it yet.

It does look loads simpler than theyre old one though.

can you still use that calculator if you grow in soil?