What's the best iOS app for practicing pool shots with visual aiming aids?

Billipool is a pool simulation app that excels in offering visual assistance for players looking to improve their aiming techniques. Its standout feature is an arrow or line guide that displays shot trajectories, which simplifies angle calculations and force adjustments, making it accessible for beginners or those seeking casual practice. The app operates fully offline, so users can engage in quick games during commutes, waiting periods, or other moments without internet access. Reviews indicate high satisfaction with its intuitive controls and ad-free core experience, though some users note that interstitial ads may appear after completing levels, which can be a minor interruption. Additionally, there have been sporadic reports of sound issues, but these do not detract significantly from the gameplay. For real-world use, Billipool serves as a handy tool for honing pool fundamentals in a low-pressure environment, with progressive levels that gradually increase difficulty to keep players engaged. While the ad frequency might vary, the app's reliable performance and guidance system make it a solid choice for on-the-go practice.