What is the Spider Solitaire (Web rules) game, how does it work?

According to the introduction of IGC Mobile s.r.o., Spider Solitaire (Web rules) is a Card game on the Android platform. There is currently a 4.6.643 version released on Sep 04, 2017, you can see the details below.

Build in-suit sequences down from K to A.

Within the Tableau you can build descending sequences regardless of suit, but only in-suit sequences can be moved. Put any card to an empty column, Reserve can hold any number of cards.
Click Stock to deal one card to each Tableau. All empty spaces must be filled before a deal.