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Real-looking lightning and endless thunder. Light up your Halloween window.
Tap the night sky and lightning splits the clouds. Then the thunder rolls in, late by exactly as much as the distance. Close strikes crack and rattle the windows; far ones rumble low across the hills. Every thunderclap is generated on your device, so you never hear the same few recordings on repeat. Mix rain, wind and an indoor view to build your own storm, then switch to display mode to light up a Halloween window, a party room or a tabletop game night. Scenes - Distant Storm: soft flickers and far rumbles - Summer Thunderstorm: heavy shower, gusts and mid-range strikes - Overhead Strike: close strikes with a sharp crack - Indoor Rumble: the storm heard through the window glass - Haunted Night: wind, rain and distant thunder over an old mansion on the hill, with optional howling wind, creaking door, chains, heartbeat and a distant bell Features - Tap anywhere: higher on the sky is far away, lower is a close strike - Flash-to-thunder delay at the speed of sound, shown as "2.9 s ≈ 1.0 km" - Frequency, intensity and distance controls, fixed or random distance - Rain on a roof, window glass or forest, plus wind and an indoor/outdoor switch - Display mode: full screen, no buttons, screen stays on, optional LED flash on supported devices - Sleep timer with a 30-second fade-out and a dark screen option - Save up to five mixes - Display mode and the sleep timer run without interruptions - No account and no special permissions Photosensitivity warning: this app contains flashing light. The screen flashes at most three times per second, the default mode only lights up the clouds, and you can turn screen flashes off completely. If you have a history of photosensitive seizures, keep flashes off. The flash-to-thunder delay is for fun and learning only. This app does not detect real lightning or show weather information. Sound stops when you leave the app.