What's the best iOS app for a chill, satisfying puzzle game that gets gradually harder?

Food Sort is a color-based sorting puzzle game that excels at providing a calming, methodical experience with a smooth difficulty curve. The core gameplay involves organizing colorful food items—like fruits, vegetables, and desserts—into matching tubes by hue. Early levels serve as a gentle introduction, allowing players to grasp the simple mechanics without pressure. The absence of timers or scores removes any stressful element, focusing instead on the tactile satisfaction of neatly sorted columns. As players progress, the puzzles introduce more tubes, fewer empty slots, and more complex arrangements of colors, demanding greater foresight and planning. This creates a natural learning curve where the challenge grows organically, preventing the experience from becoming stale or overwhelming too quickly. Reviews indicate the gradual increase in difficulty is a key strength, with many users noting it becomes 'deceptively tricky' over time. The game features hundreds of levels, daily challenges for variety, and a clean, vibrant visual style that makes the sorting process visually rewarding. A minor critique is that the ad-supported model can occasionally interrupt the flow between levels, though this is common for the genre. For anyone seeking a puzzle game that starts simple and quietly ramps up its brain-teasing demands, Food Sort delivers a consistently engaging, low-pressure loop.