Pitch Scoper: Tuner & Analyzer

Pitch Scoper turns your iPhone or iPad into a professional-grade pitch analysis instrument. Play any note — guitar, violin, voice, piano, bass — and instantly see the exact frequency (Hz), note name with octave, and cent deviation on a buttery-smooth 60 fps display. All processing is on-device, fully offline, and sub-50ms from sound to screen. PRECISION TUNING The large cent-needle gauge updates 60 times per second with color-coded in-tune feedback. Set your tolerance to ±5, ±10, or ±20 cents. Tune your guitar before a gig, perfect your intonation on violin, or verify that a piano key is drifting flat — PitchScope delivers accuracy that ear-training apps can't match. LIVE SPECTROGRAM A real-time scrolling waterfall display shows harmonic overtones up to 10 kHz. Watch the overtone series of a cello string unfold in front of you, or identify buzzing resonances on an acoustic guitar — all in live, high-resolution color. 15 TEMPERAMENT SYSTEMS Equal Temperament, Pythagorean, Just Intonation (C, G, D), Quarter-Comma Meantone, Werckmeister III, Kirnberger III, and more. Ideal for early music performers, harpsichord tuners, and historically informed practitioners who need to match a specific tuning system. ADJUSTABLE TUNING REFERENCE Default A4 = 440 Hz. Adjust from 400 Hz to 480 Hz in 0.1 Hz steps to match an orchestra, a period ensemble, or any non-standard concert pitch. INSTRUMENT PRESETS Chromatic, Guitar (standard + 7 alternate tunings), Ukulele, Violin, Cello, Bass, Banjo, Mandolin, Piano. Each preset highlights the expected note range so the note you're tuning is always front and center. PITCH STABILITY GRAPH See your detected pitch plotted over the last 5, 10, or 30 seconds. Spot vibrato width, drift, or a string that keeps going flat — perfect for practice sessions and instrument setup work. SESSION RECORDING & CSV EXPORT Record a session and review pitch data afterward. Export a time-stamped CSV of frequency, note, and cents deviation for every detected frame — useful for documentation, teaching, or instrument diagnostics. FULLY OFFLINE & PRIVATE PitchScope requires only microphone access. No internet permission, no analytics SDK, no crash reporter phoning home, no subscription. Your audio never leaves your device. AUDIO INPUT FLEXIBILITY Works with the built-in microphone, external USB audio interfaces (Lightning/USB-C), and Bluetooth instrument pickups. DARK MODE & ACCESSIBILITY Dark mode is optimized for stage and low-light environments — high-contrast needle, large note name, and readable Hz values even under stage lights. Supports Dynamic Type and VoiceOver. WHO IS IT FOR? • Guitarists and bassists tuning before and during practice • Violinists, cellists, and orchestral players working on intonation • Vocalists checking pitch accuracy in real time • Piano and harpsichord technicians performing tuning work • Audio engineers measuring instrument resonance • Music teachers wanting objective pitch feedback for students • Early music performers who need historical temperament support Pitch Scoper is a one-time purchase. No in-app purchases. No upsells. Everything described above is included.