Velo Visualiser is a fast, fluid audio visualizer and smart lighting controller built to react to your music instantly. By using a custom native audio engine, Velo Visualizer removes the typical processing lag found in mobile apps. The result is on-screen visualizations that react to audio faster than the physical speed of sound travelling across a room, alongside low latency synchronisation for your smart home lights.

Whether you want a responsive backdrop for a live DJ set, a pulsing music companion on your desk, a player for intricate oscilloscope music, or zero-lag lighting in your living room, Velo Visualizer turns sound waves into clean, high-frame-rate visual effects.

CORE FEATURES

- Fluid 3D Visuals: Smooth rendering designed to look incredible on modern, high-refresh-rate displays.
- 44 Reactive Scenes: Choose from classic oscilloscopes (including true X/Y support for oscilloscope music), clean frequency spectrums, particle fluids, scrolling spectrograms, retro LED meters, and colourful feedback visuals.
- Five Audio Sources: React to the room with your microphone or an external audio input, visualize internal device audio (like Spotify or YouTube), play your own music files, or experiment with the built-in tone generator.
- Local File Playback: Play your own music inside Velo Visualiser and the visuals move in perfect time; drawn from the exact audio being played, not a delayed recording of it. Includes seek and loop, and supports MP3, FLAC, WAV, AAC, OGG and AIFF. Perfect for oscilloscope music: albums render at their full quality, up to 192 kHz, exactly as the artist drew them.
- Tone Generator: No music is required. Dial in a pure tone and watch every visual respond to a perfectly clean signal. Flip on X/Y mode and draw hypnotic spinning patterns (Lissajous figures) with nothing but two sliders.
- Display Mode: Prop your phone on a desk or shelf and the app becomes an ambient companion: An oversized clock, live BPM, and an audio-presence meter floating over the dimmed visuals. Burn-in safe, so it can run all night.
- Global Colour Themes: Tint the entire engine to match your vibe (Neon, Warm, Cool, Monochrome).
- Bass Haptics: Feel the music with subtle vibration-on-beat tracking that turns your device into a physical extension of the sound.

WIRELESS INTEGRATIONS

- Ableton Link Sync: Instantly lock your visual pulses to Traktor, Ableton Live, Serato, and other software over Wi-Fi for perfect beat synchronization.
- Smart Home Lighting: Connect directly to Philips Hue, LIFX or Nanoleaf smart lights over your home network. By bypassing the cloud, Velo Visualiser streams lighting commands instantly, pulsing your room in time with the music.

NO NONSENSE, NO ADS

Velo Visualiser is built entirely for the music, which means zero interruptions:
- 100% private local processing.
- No data collection, tracking, or accounts.
- Completely free with no advertisements.

OPEN SOURCE

Velo is free, open-source software (GPLv3). If you are a developer or smart-home enthusiast interested in local IoT integrations, native audio processing, or the layout architecture, the full source code is public on GitHub.