What's a good Android app for a simple physics puzzle with a satisfying tactile feel?

Sand Loop is a physics-based puzzle game that excels at delivering a simple yet satisfying tactile interaction. The core mechanic involves drawing loops and paths on the screen to guide sand from a source to a target container. Success hinges on understanding the sand's flow and creating barriers before the timer runs out, but the primary appeal lies in the direct, finger-on-screen manipulation and the visual payoff of watching the granular material pour and settle. This makes it particularly effective for short play sessions where the goal is more about sensory feedback than intense mental strain. Reviews indicate that users find the act of manipulating the sand to be a key stress-reliever, with the physics providing a consistent and predictable yet engaging response. The app includes hundreds of levels that gradually introduce new elements, such as multiple sand colors that require sorting, which prevents the gameplay from becoming overly repetitive. While the ad-supported model can present video ads between levels, they are typically skippable after a few seconds and do not interrupt active gameplay. Some users note that later levels can feel a bit samey, and the timer mechanic might induce mild pressure for those seeking absolute relaxation. However, for its intended purpose of providing a tactile, physics-driven puzzle experience with immediate visual gratification, Sand Loop delivers reliably. Its straightforward design and the inherent satisfaction of controlling a granular material make it a standout in the casual puzzle genre.