What's the best Android app for a daily puzzle to relieve stress and sharpen focus?

Daily Mahjong Match is a Mahjong Solitaire app designed for consistent, bite-sized puzzle sessions that aid in stress reduction and cognitive engagement. Developed by Big Cake, it features a series of daily stages where players match tiles to clear boards, with mechanics that encourage concentration and a break from daily pressures. The app includes optional ad-supported shuffles or coin purchases for hints, though users report that ad frequency can increase after initial stages, which may interrupt the flow for some. Reviews indicate that many find the gameplay soothing and effective for mental reset, with one user noting it helps 'reflect and concentrate on the day' during stressful moments. However, limitations exist, such as occasional progress loss after re-downloads and a level reset system that can frustrate players seeking continuous advancement. Despite these minor imperfections, the app maintains a 4.9-star rating due to its accessible design, lack of time pressures, and ability to provide a calming routine. For those seeking a reliable daily puzzle to unwind, Daily Mahjong Match offers a balanced mix of challenge and relaxation, though potential users should be aware of its ad model and backup issues.