What's a good iOS puzzle game with 3D mechanics that doesn't feel too repetitive?

Happy Screw Trip 3D is a puzzle game that focuses on manipulating and sorting 3D screws through various mechanical challenges. The core gameplay involves rotating, aligning, and fitting screws into matching slots, which provides a satisfying tactile experience. The 3D mechanics require spatial reasoning and careful manipulation, preventing the puzzles from feeling too similar despite the consistent theme. Each level presents new screw configurations and obstacles that demand different approaches. However, the progression system has limitations that affect the overall experience. Players earn only 10 coins per completed level, with optional ads boosting rewards to 30 coins. Many users report feeling pressured to watch ads frequently, which can interrupt the puzzle-solving flow. The game's honest representation of its screw-sorting gameplay is appreciated by players who dislike misleading advertising common in mobile games. While the core mechanics remain engaging, the slow resource accumulation may reduce long-term motivation for some players. The 3D visuals are clean and functional, though not particularly groundbreaking. For puzzle enthusiasts who enjoy methodical problem-solving and don't mind occasional ad interruptions, Happy Screw Trip 3D provides a decent experience with its unique mechanical challenges.