Boy Howdy's Totally Fun Spider Solitaire is a free iPhone game that offers a relaxing and enjoyable experience. The game is an elegant version of the classic solitaire game, where you aim to move all the cards into stacks in descending order to clear them from the board. The app offers four difficulty levels of Spider, using one suit for a fun game, two suits for experienced players, and three or four suits for a super-challenging game.

The game has fast and intuitive controls, and you can either tap on a card or stack or drag and drop them. The cards are beautiful and easy to read, and there are no timers, so you can relax and have fun. The app also offers unlimited undo support, so you can go back and try things a different way without any penalties. Additionally, there is an auto-highlight feature that shows which cards can be moved and which are "stuck" under others until you free them up.