Hi Product Hunt! 👋 I'm Mo, and I built Pano Tuner because every "online tuner" I tried was either a static pitch-playback page, buried in ads, or a nag screen for a mobile app. Pano Tuner is the opposite: open the page, tap once, play a note. A vintage-style analog needle shows the note, the octave, and exactly how many cents off you are. Everything runs in the browser — the microphone audio is analyzed on your device and never uploaded anywhere. Some things under the hood I'm proud of: 🎸 Seven instruments with dedicated reference-tone pages — guitar, bass, ukulele, violin, mandolin, banjo, kalimba — in English, Spanish, Portuguese, German, Indonesian and Arabic. 🪕 Alternate tunings, not just standard — Drop D, Half-Step Down, Open G, Open D, DADGAD, Drop C each get their own page with a one-tap target tone per string. 🎻 Nine temperaments — equal, Pythagorean, just intonation, meantone variants, Kirnberger III, Vallotti, Werckmeister III — plus you can build and save your own. Early-music and harpsichord folks, this one's for you. 🎺 Transposition for wind players — set it to B♭/E♭/F and read the note names your sheet music uses. 🔔 A real tuning-fork mode — no mic needed: pick any note from C0 to B8 and tune by ear. ⚙️ Adjustable concert pitch — orchestras at 442, baroque players at 415, you're covered. 🧩 A free embeddable widget too, if you run a music blog or teaching site and want a working tuner on your own page, not just a link out. It's completely free — no account, no paywall, no "pro" upsell. I'd genuinely love to hear what's missing: if there's a feature you've always wished tuners had, tell me and there's a good chance it ships within days. 🙏

Pano Tuner

Free chromatic tuner that runs in your browser.

Free chromatic tuner that runs in your browser.