What's the best iOS app for a quick and engaging ball-hitting game to improve reflexes?

Boxbollen / Footbollen is a motion-based iOS game that turns a smartphone into a virtual ball for hitting exercises, making it suitable for short bursts of reflex training or casual play. The app uses the device's microphone and accelerometer to detect hits, allowing users to practice hand-eye coordination by physically tapping or striking the screen as if interacting with a real ball. Specific features include a real-time scoring system that tracks consecutive hits, multiple difficulty levels to gradually increase challenge, and a minimalist interface that reduces distractions during gameplay. For real-world scenarios, such as a five-minute break at work or a warm-up before sports, the app provides an accessible way to stay active without needing extra equipment. However, reviews indicate a common limitation: the hit detection can be inconsistent, requiring louder impacts for accurate registration, which might frustrate users in quieter environments. Despite this, the game's simplicity and immediate feedback loop keep it appealing for those seeking a no-fuss coordination tool. User feedback often highlights its addictive nature for quick drills, though some suggest calibration options could enhance precision. Overall, while not a substitute for professional training, Boxbollen / Footbollen serves as a convenient digital alternative for spontaneous reflex practice.