Ear training and fretboard theory for guitar & bass.
Ninety-nine cents, once. No ads, no subscription, no account, no tracking — and no network connection, ever. The whole app runs on your phone.
Iron Ear is on its way to review. When it lands, the download button appears right here.
What’s inside
Built for the practice room, not the app-store screenshot. Everything below is in the app on day one.
Three trainers, no ceremony. Notes: hear a pitch, name it. Intervals: hear two notes, name the distance. Chords: hear a chord, name its quality.
Each runs easy, medium or hard — chords adds an expert tier — and any question can be replayed as many times as you need. Streaks and stats build up as you go, and they stay on the device.
The full neck for guitar, baritone and bass: note map, scale positions, shape boxes and three-notes-per-string patterns. Practice drills run at your tempo, in either direction, on a loop.
Every dot is tappable, and every tap sounds a real plucked string — Karplus-Strong synthesis, not a sine beep.
A searchable chord library with playable diagrams, plus quick-pick shapes for the ones you reach for constantly.
Build mode works the other way round: put your fingers on the fretboard and Iron Ear tells you what you just played.
An interactive wheel for keys, relative minors and key signatures — the map that makes the rest of it click.
Tap a progression — I–IV–V and other Nashville-number rows — and hear it played back in whichever key you land on.
A chromatic tuner in the same tab bar. It listens through the microphone, reads your pitch in real time, and the audio never leaves the phone — nothing is recorded, nothing is stored.
Privacy
This isn’t a promise not to sell your data. There is nothing to sell: Iron Ear has no networking code in it at all. It never opens a connection, so nothing can leave your phone even by accident.
App Store privacy label
Data Not CollectedThe developer does not collect any data from this app. That is the whole label — there are no other rows to expand.
Iron Ear is made by one small studio, sold once for a dollar, and shipped without a single thing designed to keep tabs on you. If something is broken or missing, write to us — a person reads it.