Calcophony vs PanStrobe

Calcophony is a scientific calculator for composers and musicians. It handles the mathematical side of music composition, from tempo and metric modulation to tuning systems, just-intonation ratios, polyrhythms, spectral analysis, and spectrograms, plus a metronome and a chromatic, instrument-aware tuner. TEMPO MODULATION CALCULATOR Enter a starting tempo to compare note-value reinterpretations in a BPM matrix, with near-integer results highlighted. Adjust tolerance, tuplet complexity, and target-BPM matching. METRIC MODULATION PLANNER Bridge distant tempos in multiple steps, with optional ordered intermediate tempos and pivot note values at each transition. Compare paths and target deviations, with closest alternatives when no path meets your tolerance. Adjust maximum steps and tuplet complexity. RHYTHM & SUBDIVISION CALCULATOR Calculate tuplets and nested groupings, with per-note durations in milliseconds, total duration, and equivalent note-value groupings. POLYRHYTHM VISUALIZER Audition two or more pulse streams over a base tempo. See attack points, coincidences, and numbered composite patterns. Choose nested polygons, polygons on one circle, or rings. Mute or solo streams with distinct click timbres. FREQUENCY & PITCH CONVERTER Convert between Hz, pitch name, MIDI note number, and cents. Set your reference pitch and audition the current pitch. HARMONIC SERIES EXPLORER Explore harmonic or subharmonic series from any fundamental. See each partial's frequency, nearest pitch, and cents. Highlight interval and chord families, audition one or many partials, and play them from a grand staff. INTERVAL & TUNING CALCULATOR Enter an interval by name, ratio, or cents. Approximate cents values with just-intonation ratios under a selectable prime limit, up to 31. Compare 12-TET neighbors and cents deviations. Set a root pitch to see beat frequency. RATIO CALCULATOR Multiply, divide, and raise just-intonation ratios to powers using exact arithmetic. See simplified fractions in full register and octave-reduced, with decimal and cents values. Audition intervals together or in sequence. Stack twelve fifths to reveal the Pythagorean comma. SPECTRAL CALCULATOR Compute sum, difference, Tartini, and second-order combination tones. See reinforced tones and implied bass fundamentals whose harmonic series fits your inputs. SPECTROGRAM ANALYZER Import audio or record from the microphone, then explore its frequency content with pinch-to-zoom and pan. Select a time to inspect partials, audition them from a grand staff, and find the implied fundamental. Share analysis as plain text. DURATION CALCULATOR Generate note-value duration tables in milliseconds and MM:SS.mmm, with an optional offset for scoring and session work. Enter a duration to solve for tempo or find the closest standard note value. METRONOME Use common and asymmetric meters, ten sound sets and a silent mode, custom accents, subdivision clicks, tap tempo, count-in, and tempo ramping. Share your setup as plain text. TUNER Detect pitches down to A0, with presets for guitar, bass, violin, viola, cello, double bass, ukulele, mandolin, and banjo. Choose alternate tunings including Drop D, DADGAD, and Open G. Switch between meter and strobe views and adjust tolerance. Explore Werckmeister III, Kirnberger III, Vallotti, Young I, quarter-comma meantone, and Pythagorean temperaments. Set reference A4, play per-string reference tones, and transpose instrument tunings by semitones. Share settings and readings as plain text. --- Free tier includes Tempo Modulation, Frequency & Pitch, and the Metronome. A 7-day free trial unlocks every module. A single one-time purchase unlocks everything permanently, with no subscriptions.

PanStrobe is a harmonic strobe tuner built for handpan makers, tuners and players. A handpan note is not one frequency — it is a fundamental with an octave and a compound fifth tuned above it. PanStrobe shows all of them at once as true strobe motion: each ring is one partial, position is phase, and drift speed is exactly how far off you are. When a ring stands still, that partial is in tune. TUNE BY SIGHT • Half-circle strobe disc or horizontal strobe rows — one band per partial • True strobe physics: left = flat, right = sharp, stillness = in tune • Live cents readouts with glitch rejection — and no averaging: the wobble you see is real signal • Strobe divisors (÷2, ÷3, ÷5) slow the pattern for far-off notes HEAR THE WHOLE NOTE • Real-time spectrum with a piano-key axis and labelled peaks • Waterfall view: watch each strike's harmonics evolve over time • Automatic note detection, or lock to the note you are working on BUILT FOR THE WORKSHOP • Chromatic notes with octave control, adjustable A4 reference, global cents offset • Band editor with multi-partial templates (1:2:3 and more) • Pitch pipe on every band — double-tap a strobe for a reference tone • Dark, glare-free UI designed for metal shops • Works fully offline — audio never leaves your device, no account, no tracking FREE TRIAL, FAIR PRICING Every install starts with a full-featured 8-day trial. After that, the free tier stays a single-band chromatic strobe tuner. PanStrobe Pro adds what the app is really for — every partial of a note at once, the spectrum analyser, the band editor and the pitch pipe — monthly, or yearly at about 20% less. Made by Panlab — we build and tune handpans in Hong Kong. This is the tuner we use ourselves. Privacy Policy: https://panstrobe.app/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/