PostureTuner

PostureTuner brings together three simple tools for beginner classical guitar students and their teachers — in one free app, with no ads. 🎸 TUNER An accurate chromatic tuner with automatic string detection — just play a string and the app figures out which one it is. You can also pick a string manually and listen to its reference tone. Supports standard tuning as well as a dropped 6th string (E to D). Calibrate the A4 standard (e.g. 442 Hz) and choose how responsive the needle feels — calm and steady, or fast and lively. 🧍 POSTURE Using your phone's camera, the app watches your posture while you play and tells you out loud, in real time, what to fix — shoulders, back, head position, and hand and wrist placement. It works right away using general classical guitar posture guidelines, or after a short personal calibration (4 photos of your best posture) for guidance tailored to your own body. Great for solo practice, when a teacher isn't there to correct you in the moment. 🥁 METRONOME A straightforward metronome with adjustable tempo, accents on chosen beats, and rhythmic subdivisions. WHO IT'S FOR Built for classical guitar students in the early stages of learning, and for teachers who want to give their students a simple tool for practicing at home — no account, no ads, no internet connection required. PRIVACY Everything happens locally, on your own phone. Camera video and microphone audio are never sent over the internet — the app works entirely offline and doesn't require signing in. Available in Polish, English, German, French, Spanish, Portugese.