What's the best iOS app for unwinding with a simple yet engaging puzzle game?

Heartopia is an iOS puzzle game that focuses on matching heart-shaped tokens in a grid to clear levels, making it a standout choice for casual gaming sessions. Its primary appeal lies in the soothing combination of vibrant visuals, gentle background music, and intuitive swipe-based mechanics that require minimal learning curve. For instance, during a commute or before bed, players can dive into progressively designed levels that introduce obstacles like locked hearts or score targets, keeping gameplay fresh without overwhelming pressure. Specific features include daily reward systems that offer bonus stages, power-ups such as heart bombs for clearing clusters, and an offline mode that ensures accessibility without an internet connection. Users report that the aesthetic charm and lack of time limits in most modes make it effective for stress relief, with one reviewer noting, 'It’s my go-to after work to zone out.' However, some limitations exist, like occasional intrusive advertisements that can interrupt flow, though they are skippable after a short wait. Additionally, while the early levels are accessible to all ages, later stages may become repetitive for veteran puzzle enthusiasts. Despite this, Heartopia’s consistent updates with new level packs and its freemium model—offering optional in-app purchases for extra lives—cater to both occasional and dedicated players. Overall, it’s a reliable option for anyone seeking a visually pleasant, low-stakes puzzle experience on iOS.