The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From General Arcade:
RuDavid - It's a russian trick-application. (If you looking for english version of this app, please search for "iDavid: Card Magic" in AppStore" RuDavid a great way to scam your friends. It is filled with humor, magic, flying heads and strange music. The Effect 1. Ask your friend (hereinafter the victim) to name aloud any card from the 36 card deck. 2. Further state that you have a pocket street magician iDavid and he can guess the card. 3. Take the iPhone and place it in such a way as to be visible to both of you. 4. Run the app and start the magic performance. 5. Read aloud the questions posed by iDavid to the victim. 6. When the victim has answered the fourth question, iDavid will show the card. 7. ??? 8. PROFIT Your friend will probably ask you to explain how this trick works. So be it! Tell him a secret: Actually there is no magic here, just WiFi shortwaves in the iPhone absorb brain fluctuations that occurring during mental activity, which allows it to define the required card. :) Full instructions with images going with this app. -- : - . , , . 1. ( - ) 36 . 2. , . 3. iPhone , . 4. . 5. . 6. . 7. ??? 8. ! , . , : " , wifi iPhone , , ." .