442Hz Chromatic Tuner & Drone

A precision chromatic tuner, true to its name. No ads, and it collects nothing. First month free, then a small monthly subscription. ■ Tuner · Listens through the microphone and shows the nearest note with a 0.1-cent readout · Four precision levels — ±2 / ±5 / ±10 / ±15 cents, one-tap cycling · A4 calibration — 415–466 Hz with one-tap 440/442 presets · Swiss-poster design — giant type you can read from a music stand · Fixed center needle, the dial glides smoothly (60fps) · The page washes green and an IN TUNE stamp appears — readable from music-stand distance · Filters out noise, speech and percussive attacks; favors sustained instrument tones (YIN algorithm) · Solo/Ensemble mode — in rehearsal rooms, listens only to your instrument up close · When two notes sound at once it shows nothing rather than a wrong note · From low cello (43 Hz) to the flute's third octave (C7) · Transposition (B♭·E♭·F) — clarinet, sax and horn players read written note names · ♯/♭ notation toggle · String presets (guitar·bass·ukulele·violin·cello) with per-string guidance and string lock ■ Drone · The standard intonation practice tool for strings, winds and voice · 12 notes × octaves 2–5, harmonically rich sustained tone with seamless looping · Optional perfect fifth — practice scales over a harmonic reference · Six note-name notations — C D E / 도레미 / Do Re Mi / Do Ré Mi / Dó Ré Mi / C D H ■ Subscription · Free download + first month free (once per Google account) · Then a small monthly fee, auto-renewed — cancel anytime in the Play Store · No ads, no data collection — the subscription is the only revenue ■ Privacy · Microphone audio is analyzed on the device only — never stored or transmitted · No accounts, no ads, no analytics Works for flute, violin, cello, guitar, clarinet, saxophone, voice and every other instrument.