
Bands, peaks, holds, RTA and readable decibel detail for the curious listener.
01 / 1/3 Octave RTA · Included
iPhone + iPad
Portrait + landscape
Microphone processed on-device
A WHOLE ROOM OF WAYS TO LISTEN
Explore Voice Analysis, 1/3 Octave RTA, Radial Pulse and the rest of the collection, from analytical tools to gloriously over-the-top visuals.

Bands, peaks, holds, RTA and readable decibel detail for the curious listener.
01 / 1/3 Octave RTA · Included

A rolling, rotating spectrum surface with peak caps, traces and vivid color control.
02 / Rolling history display · Included

Metal-powered audio-reactive bloom, kaleidoscopes and feedback visuals made for music.
03 / Metal visualizer · Included

Original arcade-vector scenes that turn incoming frequency peaks into fast, playful action.
04 / Arcade-vector response · Included
SAFETY MODE · FULL ACCESS
How loud is the room, really? Safety Mode places an estimated sound level on a color-coded scale alongside familiar sounds, from a whisper and conversation to a mower, siren and stadium.
Live dBA estimate, peak reading, 30–150 dB scale and an 85 dBA hearing-risk reference line.
Set a threshold and select an audible or vibration alarm. On-screen markers show where the threshold sits.
Sound examples are approximate. The app is not a calibrated meter, medical device or substitute for hearing protection.
At a concert, game or busy gathering, it can help you notice when sound is climbing. For decisions about children’s hearing or occupational exposure, use appropriate protection and a certified meter.

SOLAR SYSTEM · FULL ACCESS
Take a tour of a music-reactive solar system. Each planet's orbit follows its own range of sound frequencies, while the sun pulses with the rhythm. Moon-to-moon lasers and lightning across the asteroid belt turn the whole scene into a light show.
3D SPECTRUM · FULL ACCESS
The 3D Spectrum carries recent frequency history forward across a rotating grid, so you can watch a beat, a voice or a whole room become motion. It stays analytical without ever being dry.
THE LOOK IS PART OF THE LISTENING
Explore the theme library, from Pride, Alpine Glass and Rockford Punch to classic hi-fi faces and vivid visualizer palettes.
Microphone audio is analyzed on your device for the display in front of you. Fun Spectrum Analyzer does not record or upload that audio.
Read the privacy policyTap a supported analyzer to freeze a live moment and inspect it. The app also includes CSV export and external audio input routes.
Auto gain, noise-floor behavior and a clear estimated SPL view make the app rewarding before you touch a single setting.

DOWNLOAD NOW!
Explore Voice Analysis, 1/3 Octave RTA, Radial Pulse, Safety Mode and the complete visualizer collection. One purchase. No subscriptions or in-app purchases.