Fretlas: Guitar Scales

Fretlas turns your iPhone or iPad into a beautifully simple way
to see how music sits on the guitar.

Tap a root note, pick a scale or chord, and the entire fretboard
lights up. Switch between standard tuning, Drop D, DADGAD, open
tunings, and more — the layout updates instantly. Whether you're
learning your first pentatonic or exploring Phrygian Dominant,
Fretlas shows you exactly where every note lives on the neck.

WHAT'S INSIDE
• Over 70 scales, modes, and chord shapes — including 21 modal scales,
6 pentatonic and blues scales, 4 bebop variants, and 22 triad and
chord types
• Major modes — Ionian through Locrian
• Melodic minor modes — Lydian Dominant, Altered, and more
• Harmonic minor modes — Phrygian Dominant, Lydian #2, and more
• Pentatonic and blues scales
• Symmetric scales — whole tone, diminished, augmented
• Bebop scales for jazz study
• Exotic scales — Persian, Japanese, Neapolitan, Enigmatic
• Triads, 7ths, 9ths, 13ths, altered dominants

11 TUNINGS
Standard · Drop D · Drop C · DADGAD · Open D · Open E
Open G · Open A · Open C · Half step down · Full step down

DESIGNED FOR CLARITY
• Color-coded intervals — root, 3rd, 5th, 7th
• Light or dark fretboard
• 12, 15, 22, or 24 fret view
• Hide strings to focus on a section
• Your last setup is remembered

WHO IT'S FOR
Beginners learning shapes · Intermediate players exploring modes
Advanced players analyzing exotic scales · Anyone tuning beyond
standard

ONE-TIME PURCHASE
The free version includes the most-used content. A single one-time
purchase unlocks everything — no subscriptions, no ads, no
recurring fees. Lifetime access.

Built with care for guitarists who want to see music, not just hear it.