Retro Spectrum

Car & Desk Music Visualizer

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

New skins: Rezolution and Rezonance. Fly through a wireframe world that sharpens as your music builds, or cruise an endless foggy highway. Get both in the Motion Pack. Retro Spectrum turns your phone into a retro audio display for your car or your desk. Mount your phone, play music through your speakers, and watch a real-time spectrum analyzer light up in the style of classic 80s–90s car stereos. Built for JDM and neo-classic car fans, and just as good as an always-on visualizer on your desk. NEW: MOTION SKINS Two new skins that don't just react to your music—they travel with it. They estimate the genre from what the mic hears and use song info when available, so no two shows are ever the same. • Rezolution — fly nonstop through a wireframe cyberspace. As the music builds, detail and distant views emerge, and at top speed it hits OVERDRIVE. • Rezonance — cruise an endless foggy highway under a clean white HUD. Pure chill for the long drive home. Motion skins are graphically intensive and may run warm on older devices. HOW IT WORKS Retro Spectrum listens through your device's microphone and analyzes the sound in real time. Because it uses the mic, it reacts to ANY source playing through your speakers—streaming, radio, CD, anything. No cables, no pairing. Important: it responds to sound from SPEAKERS, not headphones or earphones. Point your phone toward the speakers and turn the volume up. RETRO SKINS Switch between display styles inspired by legendary in-dash stereos: • VFD Green — a fluorescent-tube display (included free) • Plasma Orange — spinning-CD deck with artwork and a big clock • JDM Night — KENWOOD-style dual-zone EQ with 7-segment clock • Bubble Grid — synthwave neon grid with a perspective floor • Wireframe LCD — Y2K retro-future tunnel HUD • Gaming RGB — flowing RGB bars with mirror reflections Every skin works in both portrait and landscape. NOW PLAYING See the song that's playing right now. When you use Apple Music, the title, artist, and artwork are read directly from the system for instant accuracy. For any other source, Retro Spectrum identifies the track from the mic using Shazam technology. Double-tap to look up a song on demand. SHARE THE MOMENT Tap the artwork to turn your current skin and song into a share card for Instagram Stories and more. DESK MODE A built-in clock, date, and battery readout make Retro Spectrum a great always-on display for your desk setup—a glowing retro visualizer and clock in one. Choose 24-hour or 12-hour time with AM/PM. PRIVACY Microphone audio is analyzed on your device and is never recorded or saved. Song recognition can be turned off anytime. See our privacy policy for details. FREE + SKIN PACK + MOTION PACK The app and the VFD Green skin are free. Unlock the five other retro skins with the one-time Skin Pack purchase, and Rezolution and Rezonance with the one-time Motion Pack purchase. The two packs are sold separately.

  • 4.8
    out of 5
    8 Ratings

This update adds two new skins: Rezonance and Rezolution. They estimate the genre from what the mic hears, and when Shazam identifies the song, they use that too to shape the show. The changes are subtle, so at first glance you may not notice what's changing or how. That's the point. But no two shows are ever the same. Just put on some music and enjoy the scenery quietly shifting around you. Rezonance came together pretty smoothly. It's pure, deep chill. Perfect for the long drive home. Rezolution, on the other hand, fought me every step of the way. It's the main reason this update is late. So I went all in on the drama. Don't fly too fast! Each skin has genres it clearly loves. Of course, play whatever you like. Try different tracks and find your favorite match. Both come together in the Motion Pack. Pricey? Think of it as buying me a beer. These skins trade a bit of everyday coziness for spectacle. Honestly, older devices may struggle. Even my test phone (iPhone 17) gets seriously hot after a few minutes. I've refactored to hold 30fps, and I'll keep shipping updates to make them lighter. CarPlay support is the request I hear most, from all over the world. Really. I'd love to add it, but CarPlay apps face strict review and feature limits, so it's a long road. Thanks for your patience. You can now switch the clock to 12-hour time with AM/PM. Another feature you asked for. If a request isn't technically hard, it usually ships fast. Keep them coming!

The developer, TAKUMA FUJITSUKA, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    TAKUMA FUJITSUKA
    Size
    4.8 MB
    Category
    Music
    Compatibility
    Requires iOS 16.0 or later.
    • iPhone
      Requires iOS 16.0 or later.
    • Mac
      Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and Japanese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 TABEworks