Play better · Build your own
Everything you
need, nothing
you don't.
A tuner that reads to a single cent. A metronome with a drummer behind it. Every chord on the neck. And, on the other side of the site, the whole process of building an electric guitar from a rough plank to a working instrument.
Free · No account needed · Nothing to install
Quick tune
Straight to the thing you probably came for.
The tools
See all →Twelve browser tools built for practice, not for show. Every one of them works on a phone, works offline once loaded, and never asks you to sign up.
Chromatic tuner
Forty-two tunings from standard to eight-string drop E. Reference pitch from 415 to 466 Hz. Reads to one cent, and won't jump an octave on your low B.
TimeMetronome & drum beats
Nineteen grooves, shuffle, half-time shuffle, 12/8 blues, train beat, 7/8, with an editable step grid, swing control and tap tempo.
HarmonyChord library
Pick a root, get every chord built on it, sorted by family. Fingerings, the notes in each voicing, and a button to hear it strummed.
FretboardScales & fretboard
Any scale or mode drawn on the neck, with the intervals labelled, the five box positions marked, and playback so you can hear what you're looking at.
TablatureRead guitar tab
The six lines, the fret numbers, and every technique symbol explained simply, hammer ons, pull offs, bends, slides and palm mutes. No theory needed.
EarTuning by ear
The fifth fret method step by step, the harmonic and octave checks, a beat-frequency lab, and the strange political history of A = 440 Hz.
FretboardNote memorization tool
A voice calls a random note on the downbeat of every bar. Find it in four places on the neck before the next one. All twelve notes, adjustable tempo, tough love.
ReadingRead sheet music
Standard notation from scratch, the staff, note names, durations and rests, with audio for every note and free printable staff paper.
KeysCircle of fifths
An interactive map of all twelve keys. Click any key for its signature, its relative minor, and its I, IV and V chords, with a guide to using it.
SongwritingKey finder
Click the chords you already know are in your song and this works out which keys they could belong to, then hands you the rest of the chords and the strongest notes for a melody or solo.
EarPerfect pitch trainer
Two tones play and you say which was higher. The gap narrows from a whole tone down to a couple of cents, so you find the real limit of what your ear can hear, and train it wider.
ChordsWhat chord is this?
Click the frets you are holding down and it names the chord, including inversions and slash chords, with the notes and intervals so you can see why.
CourseThe building course
Twelve full-length guides covering every stage of building an electric guitar, from the first drawing to the final wiring. Free, and nothing gated.
Build your own
The build section →The other half of the site: a free 20 hour course covering every stage of building an electric guitar, plus the calculators you need to get the numbers right before you cut.
Fret position calculator
Slot positions to the thousandth of an inch for any scale length, including multiscale fanned frets. Print it and use it as a template.
CalculatorString tension calculator
Work out what a set will actually pull at your scale length and tuning, before you find out the hard way that your down-tuned build is a wet noodle.
ReferenceWiring & electronics
What pot values, capacitors and switch types actually do to your tone, and how to pick them without cargo-culting a forum post from 2006.