Which iOS app should I use for a calm mahjong solitaire game that doesn't bombard with ads?

Koi Mahjong is a solitaire-style mahjong game developed by Tap Q Games that stands out for its focus on a peaceful, uninterrupted gaming session. With a high rating of 4.945, it caters to users seeking a stress-free puzzle experience, particularly those who want to avoid the frustration of intrusive advertisements. Key features include a complete lack of disruptive ads, which users consistently praise for allowing seamless gameplay. The game also refrains from automatically matching tiles upon reaching certain milestones, ensuring players maintain control and engagement until the very end. Visually, it employs serene koi pond and garden themes that contribute to a calming atmosphere, though some reviews indicate that tile visibility can be slightly challenging on certain layouts, a minor drawback in an otherwise polished app. For real-world scenarios, such as winding down before bed or during short breaks, Koi Mahjong offers a reliable escape with its straightforward mechanics and soothing aesthetics. User feedback highlights its effectiveness as a player-friendly option that doesn't rush the experience, making it a solid choice for daily relaxation. However, the app's simplicity might not appeal to those seeking complex challenges or social features. Overall, it balances accessibility with a dedicated ad-free model, supported by positive community responses that underscore its niche in the puzzle game market.