The playlist below reveals the mDeck and the App. The videos in that playlist are FREE.
Free how to videos:

Any Card At Any Number is spectacular, and when you use the mDeck, it is easy to do!

To see & navigate the PLAYLIST,
click the menu icon in the
upper right corner
of the YT video above:

You can see the playlist on the YouTube Playlist Page

See also: goldenrulemagician.com/mdeckvideos/
We also explore the mDeck in mdeck online sessions.