Music Helper Pro

Music Helper Pro is an interactive music theory reference for guitarists, pianists, and anyone learning scales, modes, and intervals. Explore every scale across every root note on a visual piano keyboard and guitar fretboard, calculate intervals between any two notes, and save your favourite scales for instant recall — all offline.

SCALE EXPLORER
Choose any root note — C, G, F#, Bb, and every other pitch — and any scale type, and instantly see which notes belong to that scale highlighted on a piano keyboard and guitar fretboard side by side. The scale formula is displayed in interval notation so you can understand the structure, not just the notes. Twelve scale types are built in: Major, Natural Minor, Harmonic Minor, Melodic Minor, Pentatonic Major, Pentatonic Minor, Blues Scale, Dorian, Phrygian, Lydian, Mixolydian, and Locrian.

GUITAR FRETBOARD
The fretboard view supports multiple tuning configurations: Standard (EADGBE), Drop D, DADGAD, Bass Standard, and 5-String Bass. Highlighted positions show exactly which fret and string each scale note falls on. Learning a pentatonic shape for lead guitar? See it on the neck instantly across any tuning.

PIANO KEYBOARD
A full piano keyboard view shows scale notes highlighted in the app's primary colour across multiple octaves. Useful for keyboard players, theory students, and anyone who wants to see scale patterns visually laid out across the standard piano layout.

INTERVAL CALCULATOR
Select any two MIDI notes using the interval sliders and the app calculates the interval between them — the semitone distance, the standard interval name (perfect fifth, major third, diminished seventh), and the frequency ratio. Use this to train your ear, understand chord construction, or check the relationship between notes in a melody.

PLAY SCALE AND CHORDS
Music Helper Pro can play the current scale note by note for ear training, or sound a full chord built on the root note. The interval calculator can play both notes melodically (one after the other) or harmonically (simultaneously) so you can hear the sound of each interval relationship.

SAVE FAVOURITE SCALES
Save any root-and-scale-type combination with one tap. Your saved scales appear in the Favourites tab for instant recall — no need to re-navigate through root notes and scale types every session. Perfect for practising the same set of scales in your daily warm-up.

FULLY OFFLINE
No internet connection required. All scale data, fretboard layouts, piano keyboard displays, and interval calculations are computed locally on the device.

WHO IS THIS FOR?
• Guitarists learning the fretboard and scale positions
• Piano students exploring modes and scale structures
• Music theory students who want an interactive reference alongside their studies
• Songwriters exploring different scale colours and moods
• Ear training enthusiasts who want to hear intervals on demand

No subscriptions. No ads. No account required. Music Helper Pro is a clean, fast, offline music theory tool for every day of your practice.