Hey Product Hunt! I'm Johnny, a solo iOS dev and guitarist. I built AltTuner because every tuner app stops at standard and maybe Drop D — but there's a whole universe of tunings out there that make guitars sound completely different. AltTuner has 50+ tunings organized by category (open, modal, drop, experimental) with real songs and artists for each one so you can hear why a tuning matters before you try it. The tuner uses your mic like any other tuner app, but the database is what makes it different — Hawaiian slack-key, Sonic Youth noise tunings, Nick Drake's lute tuning, Swervedriver's shoegaze tunings, Tuareg desert blues, and everything in between. Free tier covers the tunings most guitarists need. One-time Pro unlock ($X.XX) gets you everything else. No subscriptions, no accounts, runs entirely on-device. Would love feedback from any guitarists here — what tunings are we missing?

AltTuner — Alternate Guitar Tunings

Alternate tunings from the Stones to Sonic Youth.

Alternate tunings from the Stones to Sonic Youth.