Ivory Pro: Piano Tuner Pro

Professional-grade hybrid DSP piano tuner with USB audio interface support, specialized acoustic/electric profiles, dynamic stretch curves, premium metronome.

IVORY PRO - The Professional-Grade Piano Tuner for the Apple Ecosystem

Engineered for Ultimate Acoustic Precision Ivory Pro is a masterclass tuning suite designed specifically for piano technicians, professional musicians, and demanding audio engineers. Leveraging a hybrid DSP engine designed from the ground up, Ivory Pro delivers sub-cent frequency accuracy across the complete 88-key piano range (A0 to C8). Experience the raw power of professional bench-tuning equipment directly on your iPhone, iPad, or Mac.

Specialized Piano Profiles Say goodbye to generic instrument tuners. Ivory Pro features custom physical models optimized for specific piano architectures: • Concert Grand (Stable): Ultra-smooth, highly-damped response designed to track slowly-decaying strings and filter out complex bridge transients. • Upright Piano: Balanced physics tuned for shorter string profiles and moderate inharmonicity. • Electric Piano: Tailored for Rhodes and Wurlitzer metallic tines/reeds, providing lightning-fast detection. • Spinet / Honky Tonk: High-damping stabilization to tame highly-inharmonic, multi-string, or severely out-of-tune configurations. • Custom Mode: Fully unlock the DSP engine. Manually adjust the smoothing window size, needle physics response, damping coefficients, and noise gate thresholds to create your own signature profiles.

Inharmonicity-Aware Stretch Tuning Pianos cannot be tuned to mathematical equal temperament due to string stiffness (inharmonicity). Ivory Pro integrates a real-time Railsback stretch tuning engine. By modeling the natural stretching of bass and treble harmonics, Ivory Pro guarantees sweet, harmonious chords and a brilliantly clear upper register that perfectly matches the acoustic behavior of real strings.

State-of-the-Art Hybrid DSP Engine • Low-End Power: Leverages the McLeod Pitch Method (NSDF) combined with a sliding circular accumulator and a custom sub-harmonic octave correction filter to track the notoriously difficult bottom keys (A0, A#0, B0) without octave-doubling errors. • Treble Brilliance: Directly shifts to a high-resolution FFT coupled with Accelerate SIMD-optimized linear magnitude parabolic interpolation to guarantee sub-cent tracking on the short, transient-heavy top octave — including the most challenging B7 and C8 keys.

USB & External Microphone Support Connect any USB audio interface for studio-quality input signal: • Plug-and-play detection — Scarlett 2i2, ZOOM iQ7, and all class-compliant USB audio devices work instantly. • Live mic info bar shows the active device name, sample rate (44.1 kHz / 48 kHz), and channel count. • Automatic software gain boost (1× to 10×) for external mics, with manual fine-tuning in Settings. • Multi-channel downmix: stereo and 4-channel USB interfaces are transparently mixed to mono for precision pitch detection.

Premium Wittner-Style Metronome An elegantly integrated mechanical-style metronome: • Real-time physical pendulum swing animation. • High-fidelity synthesized mechanical wooden, electronic, and pitched click soundscapes. • Full support for complex time signatures (1/4 to 12/8) and dynamic tap-tempo.

Stunning "Midnight Onyx" Interface • Designed for dark concert halls and dimly lit piano interiors. • Vibrant glassmorphic controls and smooth, responsive physical needle movement. • Subtle tactile haptic feedback impulses that let you "feel" when a string locks into perfect pitch.

Universal & Offline Privacy • Universal Purchase: Buy once on the App Store and unlock full professional features across Mac, iPhone, and iPad. • 100% Privacy: Absolutely no data collection, no analytics, no cloud uploads, and zero tracking. All high-speed DSP processing happens locally on your device.

Start with standard equal temperament and unlock the full masterclass stretching system. Save time, tune with confidence, and experience professional-grade results with Ivory Pro.