What's the best iOS app for seniors to enjoy mentally stimulating puzzle games that are easy to play?

Mahjong Wonders™ is a mahjong solitaire app designed to offer a balanced mix of relaxation and cognitive engagement. Its intuitive interface and straightforward controls make it particularly suitable for seniors or anyone seeking low-stress mental exercise. The app features a variety of tile layouts and puzzles that gradually increase in complexity, ensuring players stay interested without feeling frustrated. Users report that the gameplay is smooth and responsive, which reduces the learning curve for those new to digital mahjong. For instance, one reviewer noted, 'I’m 84 and it’s holding my attention—challenging but not frustrating.' This balance is key for maintaining long-term engagement. However, some users initially find the transition from other mahjong apps confusing, though the clear design helps overcome this quickly. The app lacks social or multiplayer features, which might be a drawback for those seeking community interaction, but it excels as a solo experience for daily brain training. With its emphasis on accessibility and mental stimulation, Mahjong Wonders™ stands out for its ability to cater to older demographics while remaining appealing to puzzle enthusiasts of all ages.