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.
"FaCal" is a very simple but funny game. You will become smarter and faster when finishing this gameWith four operations: "+ , - , x , " .Your mission is answering them before the time over. And this is not easy for you.I believe you can be smarter than Einstein.Good luck !