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 Sergey Rozovik:
Learn with your child birds names with 30 colorful cards and three kind of quizzes. The cards are specially designed for children up to 5 years. Each card includes a picture, text and pronunciation in eight languages. This allows to use these cards for learning languages.You can also personalize any card, change an inscription, and record your own voice. To do this, press Change button on the cards list screen, then press the blue Edit button which will pop up in the upper right corner of each card.
