Inspectro: Audio Spectrogram

Inspectro turns your iPhone or iPad's microphone into a real-time audio spectrogram, chromatic tuner, and BPM meter — a scrolling waterfall of sound rendered live on the GPU, with the tools a musician actually reaches for built right in. LIVE SPECTROGRAM WATERFALL Watch frequency and loudness scroll by in real time, rendered with Metal for the lowest latency the hardware allows. Choose from 12 color palettes — including scientifically accurate turbo and plasma colormaps, plus live-reactive palettes that shift hue with the note you're playing, the beat, or the volume. CHROMATIC TUNER An adaptive pitch detector tracks the dominant note in what you're playing, with harmonic correction so it locks onto the true fundamental instead of an overtone — with a cents readout precise enough for real tuning, not just a rough guess. BPM / TEMPO METER A time-domain onset detector listens to the actual attack of each note or beat and estimates tempo from the pattern between them — useful for figuring out the BPM of anything playing nearby. SPECTACULAR FX Real GPU bloom around loud peaks, colored sparkles and shockwave rings that pulse with what you're playing, and an optional CRT shimmer overlay — all toggleable, all free to turn off if you just want the clean signal. BUILT FOR REAL USE • Tap anywhere to freeze the display and study a moment in detail • A noise gate slider to filter out room hiss • The screen stays awake while you're using it • Reduce Motion is fully respected — every animation has a static fallback • Universal — the same app on iPhone and iPad PRIVATE BY DESIGN Inspectro never records or saves audio, never transmits anything, and contains no analytics or tracking of any kind. Every bit of analysis happens on your device, in real time, and nothing it hears ever leaves your phone.