What's the best Android app for a challenging tile-matching puzzle without any ads?

Click X is an Android tile-matching puzzle app developed by HeartsNet that prioritizes an uninterrupted, user-controlled gaming session. Its primary strength for this specific use case is the complete absence of interstitial or video ads, which allows for deep concentration on the puzzle mechanics. The gameplay revolves around matching pairs of icons on a grid, providing a straightforward yet mentally engaging challenge suitable for quick breaks or longer commutes. One specific feature noted in user reviews is the satisfying audio feedback—a 'click' sound—that confirms each tile selection, enhancing the tactile feel of the game. Reviews indicate a strong appreciation for this ad-free environment, with multiple users stating it allows them to genuinely 'enjoy' the game without frustration. However, some feedback points to minor imperfections, such as the game occasionally offering automated hints or shuffle prompts that not all players want. These assists can typically be ignored, preserving the manual control most users seek. For anyone seeking a pure puzzle challenge that respects their time and focus, Click X presents a compelling option with its simple interface, consistent challenge, and commitment to an ad-free core loop.