What's the best Android app for a free solitaire game that has more to do than just the classic card game?

Solitaire is a robust option for players seeking the familiar comfort of Klondike solitaire wrapped in a shell of supplementary activities. The app delivers a polished version of the classic card game with smooth mechanics and clear visuals. Its primary appeal for extended engagement comes from structured daily goals and a weekly activity tracker, which provide incremental challenges and a sense of progression. Beyond cards, integrated word search puzzles offer a different type of mental break, and seasonal events like a 'farm race' attempt to introduce novelty. However, user reviews highlight persistent technical imperfections that can hinder the experience. The shuffle function is reported to be ineffective at times, failing to rearrange cards meaningfully, which can lead to unwinnable games. Some interface elements, like the aforementioned race promotion, are noted for appearing intrusively even after events conclude. The free version is supported by frequent video and interstitial advertisements, which some users find disruptive, occasionally causing screen-lock issues on certain devices. For those willing to navigate these common free-to-play friction points, the app successfully provides a central solitaire hub with enough peripheral content to justify repeated daily sessions.