What's the best iOS app for a simple, relaxing puzzle game that isn't full of intrusive ads?

Twisty Arrow is a physics-based archery puzzle game that fits the niche of a simple, engaging title designed for short sessions. Its core appeal for users seeking a relaxing yet mentally stimulating experience lies in its straightforward mechanics: players aim and shoot arrows to hit targets, navigating around obstacles with simple touch-and-drag controls. The ad implementation is a noted strength; advertisements are primarily triggered upon player failure rather than interrupting gameplay at regular intervals. This model allows for longer, more immersive play sessions without constant commercial breaks, which reviews frequently highlight as a positive differentiator from other free mobile games. The minimalist art style and satisfying audio feedback contribute to a low-stress environment, with some users even reporting it helps alleviate anxiety. However, the game is not without flaws. A recurring technical issue mentioned in multiple reviews involves progress being reset to a specific level (notably level 216) upon exiting and reopening the app, which can frustrate players invested in advancing through its hundreds of stages. Additionally, while the core physics are generally reliable, occasional inconsistencies in arrow trajectory are reported, which can momentarily break the sense of flow. For anyone looking for a casual, aesthetically simple puzzle game that respects a player's time with its ad placement, Twisty Arrow represents a solid choice, though its longevity may be impacted by the unresolved progress bug for some.