Turn your Apple Watch into a laser sword. Just swing! Zap Yeah listens to your wrist. Swing in any direction and a laser sound fires the instant you move, with a laser blast streaking across the screen. Swing again mid-sound and it restarts right away, so fast slashes and back-and-forth duels sound just right. A HUM THAT FOLLOWS YOU While your arm moves, a deep energy-blade hum rises and falls with your speed, then fades away when you're still. Keep your wrist still and the watch stays quiet. MORE WAYS TO ZAP • Tap anywhere on the screen to fire a laser blast. • Long press, or use the Apple Watch double-tap gesture (on supported models), for a villain voice clip. MAKE IT YOURS • Sensitivity: turn it up for gentle flicks, down so only your hardest swings fire. • Choose your laser sound. • Turn the hum and the laser animation on or off. • Set the volume. Works entirely on your watch: no phone, no internet, no account, and no data collected. Perfect for: • Sci-fi fans and backyard duels • Kids at heart • Anyone with a wrist and a sense of fun

What's New in Zap Yeah

September 27, 2026

A big upgrade from the inside out: • NEW: a deep energy-blade hum that follows your wrist. It's silent when you're still and rises as you swing. Turn it off in Settings if you like. • Swings are now detected in every direction, and the sound starts almost instantly. • Rapid swings no longer get skipped: every swing plays, and a new swing restarts the sound. • New sensitivity slider: 0–100%, higher means swings trigger more easily, with a much wider range. • Smoother and more reliable, including when you leave and come back to the app. • Tidier main screen and Settings. Requires watchOS 27.