Fretionary

Brandon Sumner

In-app purchases

About this app

The fretboard dictionary. Every scale, chord, and progression — everywhere on the neck.

Fretionary is a beautifully designed guitar reference and practice tool, built for guitarists who want to actually understand the neck — not just memorize shapes.

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INTERACTIVE FRETBOARD
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• 14 scales — Major, all 7 modes, pentatonic major/minor, blues, harmonic and melodic minor, whole tone, diminished
• 35+ chord types — triads, sixths, sevenths, ninths, elevenths, thirteenths, sus, altered, lydian dominant
• Color-coded notes by interval (root, 3rd, 5th, extension)
• Position highlighting — see all 5 scale positions
• Note labels: name, scale degree, interval, or none
• Real guitar audio through your speakers

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ALTERNATE TUNINGS
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• 9 tunings — Standard, Drop D, Drop C, DADGAD, Open D, Open G, Open E, Eb Standard, D Standard
• The fretboard transposes in real time to your actual tuning

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CHORD LIBRARY
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• Every chord type with multiple voicings up the neck
• Interval-structure cards show the theory (R, 3rd, 5th, ♭7, etc.)
• Resolution suggestions — see where each chord wants to move next, with the voice-leading reason
• Tap to hear it through real guitar audio

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CAGED SYSTEM
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• Each of the 5 CAGED shapes for any key
• Caret-fret indicator and per-shape tips
• Shapes lit up directly on the interactive fretboard

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PROGRESSIONS
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• 30+ common progressions across pop, rock, blues, jazz, country, folk, R&B, shoegaze, indie, punk, metal
• Diatonic builder — pick any key, see all 7 chords with qualities
• Examples — concrete chord progressions in fixed keys (Slowdive, Death Cab, NWOBHM, Jobim-style bossa, more)
• Custom builder — stack your own
• Audio playback at any BPM with auto-strumming

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PRACTICE
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• Name the Note — fret lights up, pick the note
• Find the Note — tap every position of a target note
• String Drill — master one string at a time
• Difficulty: Beginner, Intermediate, Advanced (timed)

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TOOLS
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• Built-in metronome — BPM 40–240, six time signatures, accent + offbeat clicks, tap-tempo

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SAVED
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• Heart any chord, scale, or progression to save
• Auto-tracked recents — your last 20 selections always available

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FREE vs PRO
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Most of Fretionary is free — including the interactive fretboard with 4 essential scales, 8 essential chord types, the CAGED system, basic progressions, and one practice mode at beginner difficulty.

Pro unlocks the full catalog: all 14 scales, 35+ chord types, 30+ progressions across genres, all alternate tunings, all practice modes and difficulty levels, audio playback in progressions, and the metronome.

Available as a monthly or annual subscription, or a one-time lifetime purchase. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel in the Google Play Store under Subscriptions.

For guitarists who want to stop guessing and start understanding.

What’s new

• Custom Mode — pick any notes, see them all over the neck. Build any scale or chord shape.
• Free 7-day trial of Pro — cancel anytime.
• Cleaner mode switcher.
• Fixed: custom progressions now play through every chord.