The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From YUKI TOYOSHIMA:
Confident in Math??Challenge Your SkillNot Confident in Math??Practice with Easy Problems!HowTo:Swipe for Higher Value. Swipe If Equal.So, Which Number is Higher??Swipe as fast as you can!!