About this app

Prism Audio turns your iPhone or iPad microphone into a real-time spectrogram and frequency analyser — a precise, beautiful window into the sound around you. Watch a smooth scrolling waterfall paint every frequency as it happens, read the dominant pitch and nearest musical note instantly, and track levels on a responsive dBFS meter. Whether you're tuning an instrument, hunting a noise, studying acoustics, or just curious what sound looks like, Prism Audio makes it visible. FEATURES • Live scrolling spectrogram with linear or logarithmic frequency axis • Real-time dominant frequency (Hz) and musical-note readout • Tap-and-drag crosshair to inspect any frequency • Responsive level meter with peak hold • Guided presets for full-range, voice, music and more • Choice of colour maps and adjustable brightness • Dark, distraction-free instrument design PRISM AUDIO PRO (one-time purchase) • Remove all banner ads • Record sessions and export PNG images or audio • High-resolution 4096 and 8192-point FFT for sharper detail • Freeze the live view to inspect and pan the timeline • Share clean spectrogram images without a watermark PRIVACY The microphone is used only while the live display is on screen. Nothing is recorded, stored, or sent anywhere unless you explicitly export it. Note: Prism Audio shows a relative dBFS reading, not a calibrated SPL measurement.

Audience growth

Ratings growth

Steady

7-day gain +0

Ratings / day 0.0

30-day gain +0

US rating-count history

0 ratings

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking