Spider by Logify is the best Spider Solitaire app available on the iPhone. With its smart hint and solution features, it offers a unique and enjoyable gaming experience.

One of the standout features of Spider by Logify is its built-in solver. If you're ever stuck, simply tap on the Hint button and the solver will show you the next best move or indicate if you've reached a "Dead end." This solver works even when you're offline, ensuring you never have to worry about being stuck without a solution.

The game also offers randomly generated deals, with the solver weeding out unsolvable ones. You can even choose the number of suits (1, 2, or 4) before starting a game, allowing for customization and variety.

Spider by Logify boasts a range of additional features to keep you entertained for hours. Daily Challenges, an auto-complete option, and the ability to shade blocked cards are just a few examples. The game also offers unlimited undo, optional relaxed mode, statistics, and Game Center integration for leaderboard and achievements.

With its crisp and classic design, smooth gameplay, and a plethora of customization options, Spider by Logify is the ultimate Spider Solitaire app for iPhone users.