Fretboard
Every note and interval across the whole neck — a free explorer for learning where everything lives.
Guitar reference & practice Learn the
Learn the
fretboard.
Chords, scales, arpeggios, progressions, the circle of fifths and a free fretboard explorer — six clear modules that finally make the neck make sense.
For iPhone 15 and later.
Every concept, colour-coded.
Each module owns a colour so you always know where you are — but they share one fretboard, one language, one flow.
Chords
A full library of shapes with fingering, from open cowboy chords to barre voicings.
Scales
Major, minor, modes and pentatonics mapped across the whole neck, with notation and piano roll.
Arpeggios
Broken-chord patterns across every position to build melody, lead lines and solos.
Progressions
The chord sequences songs are built from, organised by style — in every key.
Circle of Fifths
An interactive wheel for keys, signatures and what plays well together.
…and they all connect.
Jump from a chord to the scale that fits it, or the key it lives in — without losing your place.
Crystal-clear diagrams
See exactly where your fingers go.
Every chord shows finger numbers, open and muted strings, and alternate voicings up the neck. No clutter — just what you need to play it.
Fingerings Voicings Up the neck
G
Am
Cmaj7 C · E · G · B
C major pentatonic C · D · E · G · A
Built for the way you practise.
Clean, calm screens that follow your iPhone’s light and dark appearance.
From first chord to fluent.
Beginner
Your first open chords and the notes that make them.
Intermediate
Barre shapes, scales across positions, and your first solos.
Advanced
Modes, extended voicings and reharmonisation with the circle.
Free to start
Try it free. Go Pro when you’re ready.
Download for free and explore a taste of every module — plus the whole fretboard explorer. Unlock the complete reference, every module, with one Pro purchase.
Free
Free
A solid start for your first chords and patterns.
- A free taster across all six modules
- The full fretboard explorer — every note on the neck
- Crystal-clear diagrams with fingering, light & dark
- International and German (H/B) note naming
Pro
One-time unlock
The complete reference, every module unlocked.
- The complete chord library and all scale types
- Every arpeggio shape and all chord progressions
- Advanced modes and seventh chords in the circle of fifths
- All keys, modes and positions across the neck
Pricing shown in-app. Pro is a one-time in-app purchase.
Questions, answered.
Is Fretsphere free?
Yes — download it for free and explore a starter set of every module, plus the entire fretboard explorer at no cost. A one-time Pro purchase unlocks the complete reference across all six modules.
What does Pro unlock?
The complete chord library and all scale types, every arpeggio shape, all chord progressions, and the advanced modes and seventh chords in the circle of fifths — across all keys, modes and positions on the neck. The fretboard explorer stays free.
Which devices does it run on?
Fretsphere is an iPhone app for iPhone 15 and later, running iOS 17 or newer. There is no iPad-specific layout and no Android version.
Does Fretsphere work offline?
Yes. All musical content ships with the download, so every module works without a connection — and without an account.
What does Fretsphere teach?
Six connected modules — a free fretboard explorer, chords, scales, arpeggios, progressions and the circle of fifths — with clear fretboard diagrams and fingering, from your first open chord to fluent playing.
Does it support German note naming?
Yes. You can switch between international and German (H/B) note naming throughout the app.
fretsphere
Pick it up today.
Learn the fretboard, one module at a time.