Features
One app. Every angle on music theory.
Fretboard, ear, staff, rhythm, and a curriculum that ties them together — built so you practice instead of just reading.
Open the appFretboard Navigator
Every scale, every shape, every tuning.
Pick a root and a mode and the whole fretboard lights up — scales, arpeggios, and chords, in landmark numbers or note names. Works across 4, 5, and 6-string basses and any guitar tuning you throw at it.
Circle of Fifths
Key relationships you can click, not just memorize.
See how every key connects to its neighbors. Click around the wheel to hear scale degrees and chords through the built-in synth — toggle chord mode to study harmonic relationships at a glance.
Interactive Staff
Standard notation that talks back.
Switch between treble and bass clef, click any note on the staff to hear it, and overlay note names or solfège so reading music stops feeling like decoding.
Rhythm
Counting, made audible.
Note and rest durations, time signatures, and a built-in metronome — set a tempo and feel where the beat actually falls instead of just naming it on a worksheet.
Ear Training
Train the part theory can't teach.
Intervals, chords, scales, rhythm, key signatures, guitar fretboard recognition, even chord progressions — eight drill categories and four difficulty tiers. Answer by clicking, on a MIDI keyboard, or wired in over Web MIDI. Timed exams then test the theory behind the drills, unit by unit.
Curriculum & exams
A syllabus, not just a sandbox.
Seven structured units walk from pitch and intervals through key signatures, chords, rhythm and advanced harmony, each lesson ending in a quiz. Every unit then has its own timed exam, and a comprehensive final covers all seven at once. Questions are drawn from a bank far larger than any single sitting asks, and the answer order is shuffled too, so a retake is a genuinely different paper rather than the same one again. Weak-area review keeps surfacing whatever your ear-training stats say still needs work.
Play Along
Drop in a song, get real-time feedback.
Upload a MIDI or Guitar Pro file - or start from a bundled practice song - and read it as full staff-and-tab notation or a scrolling note highway. Play back on a MIDI keyboard, your instrument through the mic, or the on-screen keyboard; every note is graded live for pitch and timing as the playhead scrolls. Wait Mode pauses until you play the right note, loop any section for repetition practice, adjust playback speed and grading strictness, and transpose or re-tune the whole song on the fly. The same microphone input drives the Instrument to MIDI tool, which turns a bass or guitar into an MPE MIDI controller for a synth in your DAW - and the built-in tuner, which handles any tuning and string count.
Progress & Achievements
Every session adds up.
XP and levels track total practice, streaks track consistency, and achievements unlock on real milestones — lessons completed, accuracy hit, not vanity badges. Share a progress card with one tap.
Instruments
Instruments you can actually play
Every one is expressive end to end: velocity from where and how hard you press, pitch bend, a slide axis and aftertouch, over MIDI as well as through the built-in synth. Press Hear it on any of them and it plays itself.
Watch them being playedStylophone
A stylus, a strip, and every bend in between.
The one you play with a pen. Touch down high on a key and it speaks hard, low and it barely whispers; slide along and the pitch bends with your hand. If your stylus reports pressure, leaning on a note is real aftertouch rather than a timer pretending.
- Velocity from where on the key you land — high is hard, low is a whisper
- Slide along a key to bend the pitch continuously, with no frets in the way
- A spring-back pressure gesture on the vertical drag, separate from the mod wheel
- Pressure pen support, so leaning on a note is real aftertouch
- Play by moving the phone: how sharply you move it is how hard the note speaks
- Assignable tilt — bend, modulation, timbre or vibrato on either axis
- Pitch and modulation wheels from a scroll, with a hold latch you can rebind
- Piano or uniform key layout, three key sizes, octave shift and degree labels
- Full MPE out: per-note bend, slide and pressure, plus MIDI thru and a panic button
Bass & Pad Grid
A neck and a grid, on one surface, with a sequencer behind both.
One instrument with two arrangements. Pads is a grid controller in the browser, up to eight by eight, with the low end bottom left where every piece of hardware puts it. Bass is a real neck — your tuning, four to seven strings, seventeen frets — with the lowest string at the top, where a fretboard chart puts it. Whichever you pick, the sequencer, the kit and the MPE output are the same.
- Two arrangements on one surface: a pad grid and a bass neck
- Any bass tuning, four to seven strings, and your own tunings kept alongside
- Seventeen frets or more, horizontal or vertical, mirrored for left-handed players
- Fretless, legato and retrigger slides, chosen on a single control
- Up to eight by eight in the grid, with the low end bottom left where hardware puts it
- One board, four jobs: play it, write steps, program the kit, switch scenes
- A step sequencer on the audio clock, so it does not drift the way a timer does
- Live recording, with Auto, Wait-for-note and Count-in starts
- Mono or poly per melodic track
- Five synthesised drum kits with a knob per drum — nothing to download
- Where you hit across a pad is where the stick lands: the centre thumps, the rim cracks
- Drag down a drum while it rings to damp it, like a hand on the head
- Fold the grid onto a scale, so one pad is one degree in both directions
- Light the pads by musical role, by octave band, or a hue per pitch class
- Sends MIDI notes, drums on channel 10, and timestamped MIDI clock
- Songs save themselves, and export as text you can paste to somebody
- Play by moving the phone, or map tilt to bend, modulation, timbre, vibrato — or, on the neck, to scrolling the board
- The pen’s barrel button holds a note like a palm mute — same pitch, damped
- One voice per string, so two fingers on one pitch never silence each other
Theremin
No notes at all, just pitch and a volume hand.
One continuous field, with nothing discrete anywhere in it: left to right is pitch, up and down is volume. Snap it to a scale when you want to land somewhere in particular, or turn that off and slide through everything in between.
- One continuous field: left to right is pitch, up and down is volume
- Pitch sent as bend, so it glides rather than stepping
- Snap to chromatic, major, minor or pentatonic — or to nothing at all
- Chord buttons that follow the key and scale you chose
- The volume hand shapes the chords too, not only the melody
- Hold your bend key for vibrato
- Playable by tilting a phone, with no hands on the screen at all
- Pressure from the free vertical axis, and full MPE out
Also in the app
Smaller tools that live alongside the ones above.
Score & Tab Generator
Endless sight-reading exercises built from the rhythms, scale or chord, meter, tempo and range you choose — as notation, tablature, or both. Export to MIDI, Guitar Pro or MusicXML, or send one straight to Play Along.
Tuner
Guitar and bass, 4 to 8 strings, with drop, open and step-down tunings and an adjustable reference pitch. Reads to a fraction of a cent, down to a 5-string bass low B.
Instrument to MIDI
Play a synth in your DAW with your own instrument. Notes are tracked live from an audio interface or microphone and sent out as MPE MIDI, so slides and vibrato travel as real pitch bend.