What's the best iOS app for classic solitaire with smooth gameplay and optional ad removal?

Solitaire is a standout iOS app for enthusiasts of the classic card game, combining traditional gameplay with modern enhancements that cater to both new and veteran players. Its interface is clean and responsive, ensuring smooth drag-and-drop actions that mimic the tactile feel of physical cards. A key feature is the visual celebration at game completion, which adds a satisfying touch without being overbearing. The app intelligently assists players by indicating when no moves are possible and can automatically finish games when stuck, reducing frustration during play. Reviews indicate that users appreciate the optional ad-free version, with one noting it's so well-suited to their style that they'd consider paying for it. However, the free version includes periodic ads, which some find intrusive, though many accept this as a trade-off for a free, high-quality game. For daily commuters or those seeking a relaxing break, Solitaire provides a reliable, engaging activity with enough depth to keep sessions interesting. Minor imperfections include occasional ad placements that can disrupt flow, but the overall experience remains highly rated due to its balance of functionality and aesthetics.