Backing track library
Save and organize your own backing tracks into folders, and play along anywhere in the app.
Everything in one focused app
One app, eleven creative tools, zero distractions.
redLUX Guitar isn't a single trick — it's a complete studio that follows the natural arc of making music: jam, build, write, practice, and refine. Every area below works fully offline.
Progression Studio
A strong chord progression in any key, in seconds
Pick a key and a mood and you've got a progression worth playing over immediately — no theory homework required. Borrow chords from parallel modes for unexpected color, reharmonize on the fly, and round-trip progressions straight into your Songbook.
- One-tap Reharmonize: Brighter, Darker, or Jazzier recolors every chord while keeping the same roots
- Matching scale suggestions appear right below your progression, ready to tap into Improv
- Save to Songbook or send straight into the Improv builder
Scales & Fretboard Maps
Designed for intuition, not memorization
Most scales are built on a pentatonic backbone, so the fretboard shape teaches you the sound. The tonic is a black dot inside a glowing red ring. Characteristic "flavor" notes appear as red triangles. Stable foundation notes stay as quiet grey dots.
- Multiple fingering positions per scale, with an optional full-neck view
- Toggle scale-degree labels (1, ♭3, 5...) on or off over the diagram
- Works across every tuning, plus 7- and 8-string, bass, and ukulele
Full-Screen Practice Mode
One scale, zero distractions
Strip away everything but the fretboard. Full-screen mode goes edge-to-edge in landscape or portrait, with every position for the scale stacked and ready.
- Optional root or root-and-fifth drone so you can actually hear the scale's character
- Landscape shows the full neck; portrait stacks positions for focused practice
- Built for late-night sessions — dark enough to be easy on tired eyes
Chord Voicings
Every voicing, including the rare ones
An extensive voicing library — common shapes and the complex, rarely-documented ones — so you keep discovering new harmonic colors instead of settling for the first shape that fits.
- Chords, Triads, Arpeggios, and an Explorer view, all from one tab
- Truthful scale-degree labels per voicing (e.g. 1 5 9 ♭3 for an add9 chord)
- Star any voicing into Favorites, organized into your own folders
Improv Builder
Practice exactly what you want to master
Combine scale positions, arpeggios, and triads — including inversions — over your own progressions. Chord-aware scale suggestions analyze the actual chords you're playing and recommend scales that fit.
- Broad scale suggestions for newcomers, specific modal choices for advanced players
- Stack multiple arpeggios and triad inversions on one fretboard at once
- Jump straight in from any progression in the Studio or Songbook
Songbook
From a jam to a finished song
Add lyrics directly against your chords, organize your growing repertoire, transpose with smart capo suggestions, shuffle for practice, and share when you're ready.
- Chord symbols sit color-coded right above the lyric line they belong to
- Smart capo suggestions transpose without changing your fretting hand habits
- Rework any song back in the Progression Studio whenever inspiration strikes again
Learn
Ear training and theory, in minutes — not hours
Short, enjoyable ear-training games and music theory quizzes built for your commute or a waiting room — something better to reach for than mindless scrolling.
- Daily, Quiz, Ear, Fretboard, and Practice modes, each tracking mastery separately
- Spaced repetition remembers what you miss and schedules reviews automatically
- Daily practice streaks and a daily challenge keep you consistent without pressure
Studio Utilities
The essentials, done properly
A tuner, a metronome that actually grooves, and a recorder that mixes your playing with your own backing track — all built in, all offline.
Tuner
Accurate, low-latency pitch detection with auto string sensing and a left-handed mirror mode.
Metronome with grooves
Real drum grooves instead of a bare click, with tap tempo and a persistent mini-bar so it keeps time as you navigate.
Recording
Record yourself over a backing track in sync, then play back, rename, or share the take from your library.
Favorites & folders
Save custom chords and progressions into folders you control, with quick reordering and search.
Built for everyone
Left-handed mode, 7- and 8-string guitar, bass, and ukulele support, full VoiceOver access, high-contrast and larger tap-target options, and seven languages.
Standalone by design
No accounts to create. No ads to dismiss. No usage data leaving your device. redLUX Guitar works completely offline after download — even in the middle of the woods.