I know nothing about this program other than watching the video on their website. It looks wonderful! Who wouldn't want their kid to be that smart?
I did want to mention that from my background in Early Childhood Eduaction, there is some debate about children learning to read through "sight words" (memorizing a group of letters and giving that group of letters a name)and learning to read "phonetically" (by sounding the word out).
I was taught that learning to read sight words can have some gaps in it's program in that when they are older and are reading what happens when they come across a word that they have not been shown prior to that time. They will not know how to sound it out.
As far as I know the inner city school teach reading by sight words and now that these kids are out getting jobs they are discovering some problems with reading. Only because you can never study every word they will ever encounter.
So, you might be able to so that now and later teach your child to read phonetically too. Although once they have been taught one way it is difficult to switch gears and teach a new way.
All that to say good for you for asking and I would do a little more research on it. Call some schools and talk to some teachers.
It is an absolute JOY to see your child learn something new and succeed! I am not sure of anything worth more to a mom than that!
Blessings to you as you watch your child learn!