AudioVisualizer - Retro VFD

Don't just listen to your music—watch it come alive.

AudioVisualizer brings the mesmerizing glow of 1980s and 1990s golden-era stereo equalizers and iconic car audio systems to your iPhone. Faithfully emulating classic Vacuum Fluorescent Displays (VFD), this native visualizer transforms sound into captivating, real-time light shows.

Visualize ambient music through your microphone, or import lossless FLAC and hi-res audio files directly from the Files app for seamless queue playback.

KEY FEATURES:

◆ 4 Iconic Visualizer Skins
• Classic (10-Band): The timeless aesthetic of home hi-fi components with smooth, authentic phosphor bars.
• 3D Car Audio (90s VFD): Relive midnight highway cruises with immersive 3D perspective display emulation.
• 3D Car Audio (Trapezoid): An electrifying inverted-trapezoid arena layout capturing explosive bass and treble dynamics.
• Dual Circular Meter (Y2K): Classic 2000s dual circular car stereo meters with an upper arc level meter, lower dome spectrum, and 5x7 dot-matrix clock & track display.

◆ Native Audio Engine with Fluid 60fps Performance
• Powered by Apple's Accelerate framework and Metal for ultra-low latency FFT frequency analysis.
• Millisecond-accurate ballistics simulating physical attack, decay, and peak-hold phosphor physics.

◆ Lossless Audio File & Folder Playback
• Import audio files (FLAC, WAV, ALAC, MP3, AAC) directly from your device or iCloud.
• Add entire folders with one tap to create seamless playback queues.
• Full support for background playback, lock screen controls, and repeat modes.

◆ Deep Customization (144 Color Combinations)
• 12 vibrant phosphor colors for bars and peak markers: White, Cyan, Green, Blue, Purple, Pink, Orange, Yellow, Red, VFD Cyan, Ice White, and Violet.
• Adjustable segment resolution from 10 to 100 levels.
• Fine-tune rise speed, fall speed, and peak hold duration.
• Independent sensitivity gains for microphone and file playback.

Perfect as desk decor, a companion for late-night listening sessions, or rediscovering your favorite records. Turn your iPhone into a piece of timeless audio craftsmanship.