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.
A mathematical game for iPhone intended for strengthening the skills of summing up in your head. You are to clear the field in one minute by adding numbers into a certain amount given to you at random. The solution of this speed puzzle depends only on you.