BeatSync: Music Visualizer

BeatSync listens to music and visualizes it live on your screen — in time, on beat, in real time.

Whether listening to the room through the microphone or capturing internal playback directly from your device, the spectrum, pulse, and beat grid move in sync with the track rather than trailing behind it.

WHY IT STAYS IN TIME
Most music visualizers merely react: they wait for a beat to happen, then draw it, resulting in noticeable latency. BeatSync takes a predictive approach by locking onto the tempo (BPM). Once it identifies the period and
phase of the music, it renders visuals on the predicted beat grid — ensuring animations hit precisely with the beat rather than after it.

TWO AUDIO SOURCES
• Microphone: Captures ambient music in the room, external speakers, live sets, or instruments.
• Device Audio: Captures internal audio directly from other media apps without cables (Android 10+).

DYNAMIC THEMES & SCENES
• Neon: Frequency mapped to vivid color gradients (Bass magenta, Mids violet, Treble cyan) — designed for dark rooms.
• Minimal: Clean, grayscale brightness dynamics — crafted for distraction-free desk sessions.
• Particle: High-energy particle bursts fired on every rhythmic transient — perfect for stage backdrops and live streams.

BUILT FOR
• DJs and music producers who want to visualize the beat grid while mixing.
• Streamers and VJs looking for low-latency, audio-reactive screen backgrounds.
• Music enthusiasts who want to turn their device into a mesmerizing light show.

PRIVACY BY DESIGN
• 100% On-Device Analysis: Audio is processed transiently in volatile RAM for FFT calculation and instantly discarded.
• Zero Audio Recording: We never save, store, or transmit your audio.
• No accounts required, no advertising SDKs, and no tracking.

Note: Certain third-party streaming services restrict internal audio capture under Android system policy. In these cases, BeatSync seamlessly notifies you and falls back to microphone capture.