Strobel

A precision tuner that stays accurate in noisy rooms, plus a drone, metronome, 19 tunings, six temperaments and a full tuning history - free.

Strobel is a precision instrument tuner built for players who care about getting it exactly right - fast, accurate, and free of the clutter most tuner apps pile on.

TUNE ANYTHING Guitar, bass, ukulele, mandolin, violin, banjo - 19 built-in tunings plus your own custom presets. Auto string detection locks on the moment you pluck; no menus, no fumbling.

FOUR WAYS TO SEE YOUR PITCH • Tuner - a clean needle gauge with live cents and Hz • Strobe - the classic stroboscopic display professional techs use, now in your pocket • Strum - play a full chord and see every string at once • Intonation - a guided workflow for setting your saddle correctly, with saved history

BUILT TO WORK IN THE REAL WORLD Most tuners are tested in a quiet room and struggle everywhere else. Strobel's pitch engine uses a real noise filter, a longer analysis window for low strings, and a noise gate that learns your room automatically - so it stays accurate on a noisy stage, in a busy rehearsal space, or next to a loud amp.

FOR SERIOUS PLAYERS • Six historical temperaments - Equal, Just, Pythagorean, Meantone, Werckmeister III, Kirnberger III - with key selection, so intervals are colored the way you actually want them • Per-string sweetening offsets for intonation compensation • Reference pitch from 432-446 Hz • Capo support, frets 1-7 • A persisted tuning and intonation log with CSV export, see how well your instrument holds tune over time, or hand the data to a tech

PRACTICE TOOLS • A reference tone - a sustained, harmonically rich drone at any string's exact target pitch, for tuning by ear • A metronome -- 40-240 BPM, custom time signatures, accent, tap tempo

BUILT FOR EVERYONE • Spoken tuning cues, on automatically when VoiceOver is running • Directional "tune by feel" haptics, tune with the phone in your pocket • Left-hand mode • A live signal meter, so you always know it can hear you

No account, no ads, no clutter. Just a tuner that gets it right.