FretFlux: Guitar & Bass Tuner

FretFlux is a precision chromatic tuner crafted for guitarists, bassists, and ukulele players who demand instant pitch response, high-contrast stage visibility, and zero distractions. Powered by a native C++ DSP audio engine using the YIN algorithm with parabolic interpolation, FretFlux detects your instrument's fundamental frequency in real time with sub-cent accuracy, cutting through background noise in rehearsal rooms and live venues. SUPPORTED INSTRUMENTS & TUNINGS • 6-String Guitar: Standard (E A D G B E), Drop D, Drop C, Open G, Open D, DADGAD, Half-Step Down (Eb), Full-Step Down (D) • 7-String Guitar: Standard (B E A D G B E), Drop A • 4-String Bass: Standard (E A D G), Drop D, Half-Step Down • 5-String Bass: Standard (B E A D G) • Ukulele: Standard Soprano/Tenor (G C E A), Baritone (D G B E), Low G • Free Chromatic Mode & Custom string-by-string tunings 3 DARK NEON VISUALIZER MODES • Precision Arc Gauge: ±50 cents graduated scale with smooth needle and lock-on glow • Strobe Tuner: phase-tracking bands for intonation setup and luthier-grade accuracy • Harmonic Waves: real-time waveform visualizer reactive to string attack and sustain BUILT FOR MUSICIANS • Auto String Detection or Manual String Lock with a single tap • Reference Tone Generator (Ear Training): tap any string to hear its pure reference pitch • Adjustable A4 Calibration from 415 Hz to 465 Hz (including 432 Hz and 440 Hz) • Three Microphone Sensitivity profiles: Rehearsal Room (High Noise Gate), Normal, and Studio • Stage Mode: ultra-high contrast layout with screen wake-lock while tuning • Haptic feedback confirmation when your string locks in tune • 100% On-Device Audio Processing: microphone audio is analyzed in RAM in real time and never recorded or uploaded.

Initial release of FretFlux (1.0.0)! • High-precision chromatic tuner powered by a native C++ DSP audio engine • Presets for Guitar (6 & 7 strings), Bass (4 & 5 strings), Ukulele, plus custom tunings • 3 Dark Neon visualizers: Precision Arc Gauge, Strobe Tuner, and Harmonic Waves • Reference tone generator, adjustable A4 calibration (415–465 Hz), and Stage Mode