Tune with precision. Choose your frequency. 432 Hz Tuner is a professional-grade chromatic tuner for guitarists and musicians who want accurate tuning with support for alternative tuning standards - now with a built-in metronome and capo support. Tune your instrument to 432 Hz, 440 Hz, or 430.54 Hz scientific pitch, with real-time visual feedback and cent-level precision. Whether you're exploring alternative tunings or just need a reliable everyday tuner, this app delivers accuracy, clarity, and simplicity. Core Features - Chromatic tuner for guitar, bass, ukulele, and any instrument - Three tuning standards: 440 Hz – modern industry standard, 432 Hz (Verdi tuning) – popular alternative tuning, 430.54 Hz scientific pitch - mathematically derived system with middle C at 256 Hz - Guitar-first design with automatic string detection (E A D G B E) - Capo support - select your capo fret and string names update instantly - Built-in metronome with adjustable BPM (40–240), tap tempo, and customisable beats per bar - High-precision pitch detection (±1 cent accuracy) - Fast, low-latency response for real-time tuning - Works completely offline - Dark mode support Designed for Musicians The tuner works chromatically by design, meaning it can detect and tune any note you play. Instrument presets for guitar, bass, and ukulele provide a clearer, more intuitive interface - making tuning faster and easier without sacrificing flexibility. The metronome runs independently so you can keep time without leaving the app. Learn About Tuning Standards Includes a built-in Learn section that explains: - What 432 Hz tuning is and why musicians use it - The history of Verdi tuning - What 430.54 Hz scientific pitch means and how it differs - How modern 440 Hz became the standard - How to use the tuner effectively Who This App Is For - Guitarists exploring 432 Hz or alternative tunings - Musicians who want a reliable chromatic tuner with a built-in metronome - Players who use a capo and need accurate transposed string detection - Anyone who wants a clean, accurate, free tuner with no distractions Free & Simple No accounts No internet required No unnecessary permissions Free to use Download 432 Hz Tuner and tune your instrument your way - accurately, clearly, and confidently.