Instant progressions
Start from proven progressions across 23 genres, build modal progressions from the mode you pick, or roll a random one drawn only from progressions that actually work.
Version 1.3 — iPhone & iPad
Stop memorising shapes. See the notes that matter.
Most scale apps show a wall of identical dots. redLUX builds on the pentatonic boxes already in your fingers, then marks the one note that gives each scale its character — the ♯4 behind Lydian, the ♭2 behind Phrygian. Then it helps you turn that into music: progressions, solos, and finished songs. Entirely offline. No accounts. No ads.
A complete creative studio
From the first chord to the finished song
Everything that happens between picking up a guitar and finishing a song — in one focused, glare-friendly app built for late-night sessions.
See the notes that matter
Circles are the pentatonic box you already know. Triangles mark the note that gives the scale its flavour — shapes, not colours, so it reads in sunlight and for colour-blind players.
CAGED View
See one chord in five places up the neck, and the single finger move that turns each shape into its extensions. The connection every player chases, finally visible.
Triads & voice leading
Every three-note shape on every string set. Pick a target chord and watch each note glide to its nearest shape — the shortest move between two chords, drawn on the neck.
Songwriting & solo sheets
Turn a jam into a real song with lyrics above the words, transpose with smart capo, and print a song sheet carrying the chords, scales and arpeggios you chose.
Tuner, metronome & recording
Four tuner displays with automatic string detection, a metronome with a tempo trainer and drum grooves, and recording in perfect sync over any backing track.
What's new in 1.3
Focus any chart. Write faster.
The latest update sharpens every diagram in the app and speeds up the way you build a solo sheet.
Focus any chart
Double tap a chord or triad chart to open it full screen at extra large size, with its notes and degrees. Swipe through every voicing, or every string set and inversion of a triad.
Clearer charts
Barre chords now draw the bar over the dots the way real chord books do. Fret numbers moved clear of the markers covering them, and the nut is solid instead of see-through.
Build solo sheets faster
Chord Voicings, Arpeggios and Triads each carry the full Root, Type, Bass note and search controls. Swipe an item left to remove it; reopening a sheet brings everything back exactly as you left it.
More ways to write
23 genres of proven progressions, modal progressions built from the mode you pick, and a random generator. Press and hold a chord card to pick it up, then drag to reorder or upward to delete.
On iPad
Solo sheets can show their diagrams in two columns, and the layout carries into full screen.
Faster and cleaner
Faster launch, note names on song-sheet scale and arpeggio diagrams, and interactive fretboards that no longer sound a chord when touched.
"I built the tool I always wished existed — something I'd rely on every night, even in the middle of nowhere. No signal. No excuses. Just creation."
— Frank, creator of redLUX Guitar
On the horizon
An Android version is in the works
redLUX Guitar is being rebuilt for Android. It's actively in development — no release date to promise yet, but it's coming. The iPhone and iPad app is available today.
Built offline. Priced honestly. Made to be played.
No accounts, no ad trackers, no subscriptions. Free to download with core features included — with an optional one-time Pro upgrade that unlocks the full toolkit. One payment, yours forever.
