Nevelo is a focused toolkit for musicians: a precise metronome, an accurate tuner, and a chord library — in one beautifully restrained app. No account, no ads, no tracking. Everything runs on your device. METRONOME • Sample-accurate, drift-free timing driven by the audio clock • 30–300 BPM with a tactile tempo dial — swipe up or down to set the tempo • Tap tempo, time signatures, subdivisions, editable accent patterns, count-in • A clean, designed click; keeps playing with the screen locked TUNER • Real pitch detection — accurate to the cent, no fake needle • Chromatic mode plus guitar, bass, ukulele, and violin presets • Manual mode: tap a string to hear an instrument reference tone and tune by ear • Adjustable reference pitch (A4 415–466 Hz) CHORDS • Hundreds of voicings for guitar, ukulele, and piano • Clean, print-quality diagrams with alternate positions • Hear any chord played with a warm acoustic tone PRIVATE BY DESIGN • No account, no servers, no analytics, no third-party SDKs • The microphone is used only for the tuner and is processed entirely on-device — never recorded or sent anywhere Designed for iPhone, with full VoiceOver support, Dynamic Type, and Reduce Motion.