Luigi: Violin Tuner & Scales

Luigi helps violinists do the one thing that matters most: play the right note, in tune. Set your phone on the stand (or plug in a pickup) and Luigi listens. It detects the pitch of every note you play, shows exactly where your finger landed on the fingerboard, and keeps a heatmap of where you tend to play sharp or flat — so practice turns into progress you can see. TUNER • Accurate chromatic tuner with a ±50¢ needle and a clear in-tune zone • Automatic string detection — or pin a string when it is far off • Adjustable reference pitch (A4 = 415–445 Hz) and a haptic tick when a note locks in • Plain-language hints: "+6¢ — tune down" SCALES ON THE FINGERBOARD • Every in-key note for any major, natural minor or harmonic minor key, on all four strings up to the octave • Play in any order: each note snaps to its spot on the board and turns green when you hold it in tune • Off-key notes are named against their in-key neighbors ("between E and F#") • Adjustable tolerance: strict ±5¢, standard ±10¢, relaxed ±15¢ • Equal temperament, or just intonation against the tonic of the key DRONE AND METRONOME • A warm drone on the key's tonic, with an optional pure fifth, pitched below the violin so it never masks your notes • Sample-accurate metronome from 30 to 240 bpm with accented downbeats STATISTICS THAT COACH YOU • Fingerboard heatmap: blue where you tend flat, red where you tend sharp • Finger-level coaching ("your 3rd finger on the A string trends 12¢ sharp") • Practice streaks, minutes per day, and this week against last • In-tune rate per session and per key, plus the keys you have not visited yet • Bow tone: how much of your sound was clean, and how many scratchy moments BUILT FOR REAL PRACTICE • About 130 ms from finger correction to screen — fast enough to steer by • Works with a contact pickup through a USB audio interface, immune to room noise • iPhone, iPad (with a landscape fingerboard) and Mac • No account, no ads, no tracking. Audio is analyzed on your device and never recorded. FREE TO START, ONE PURCHASE FOR EVERYTHING The tuner, G, D and A major, the drone, the metronome, your heatmap and finger coaching are free forever. Luigi Full — every key, just intonation, practice history and bow tone — is a single one-time purchase. No subscription, ever. Luigi was made by a violinist who wanted a practice partner that tells the truth about intonation. If it helps you play better, a review means a lot.