Nut Sort: Color Sorting Game represents a growing category of mobile puzzle applications focused on color-matching mechanics and stress reduction. Developed by Tripledot Studios, the app occupies a space between traditional puzzle games and mental wellness tools, offering a simple yet engaging sorting experience that has garnered significant user attention with its 4.83/5 rating on the iOS platform. The core gameplay involves transferring colored nuts between test tubes to achieve complete color separation within each container. Players tap on any tube to select nuts and transfer them to other tubes, following specific rules about stacking and color matching. The game features hundreds of progressively challenging levels, a broad color palette, and a minimalist interface that emphasizes the sorting mechanics. Additional elements include optional peg assistance systems and completion rewards that vary by level difficulty. User experience centers around the app's deliberately calming interface, featuring smooth animations, satisfying visual feedback when colors match, and unobtrusive sound design. Real-world usage patterns suggest players engage with the app during short breaks, commute times, or as a wind-down activity before sleep. The interface maintains consistency across levels while introducing new challenges through varying tube configurations and color combinations that require increasingly strategic planning. User feedback reveals polarized experiences despite the consistently high ratings. Reviews from June-July 2025 indicate appreciation for the game's relaxing qualities and color-matching mechanics, with user LB Nott (2025-07-03) noting hopes for 'brain health' benefits and Kdiallok (2025-06-29) praising the color matching as 'very fun.' However, Cdt1970's review (2025-06-19) highlights significant concerns about ad frequency, noting advertisements appear after both wins and losses, while additional features require ad viewing. Other reviews focus on peripheral elements rather than core gameplay. The application demonstrates strengths in its accessible puzzle mechanics and stress-relief positioning but faces limitations regarding advertisement implementation and depth of gameplay. While effectively serving as a casual distraction with therapeutic aspirations, the experience may be diminished for users sensitive to frequent advertising interruptions. Ideal use cases include short sessions for mental relaxation rather than extended gameplay, particularly for users seeking simple color-matching challenges without complex mechanics.