Excellent playability

I just had to purchase the full version just after trying it! I love that there is all the data to back up testing and that its based on actual data and not just for fun. It helps in the areas that I need without overloading me - also cheaper than luminosity and actually works on my phone (iphone 4 OS 7)

BlackMetalJellyfish about Einstein™ Brain Training, v1.5.5