redLUX Guitar is the all-in-one guitar tuner, chord library, scale trainer, backing-track jam station, and songwriting studio — designed for players who want to learn faster, sound better, and create more. From your first open chord to your finished song, redLUX brings every tool a guitarist needs into one app. Tune up with studio accuracy, explore thousands of chords and scales on an interactive fretboard, jam over backing tracks, record your takes, and build full chord progressions — without juggling five different apps. WHAT MAKES redLUX DIFFERENT — SEE THE NOTES THAT MATTER Most scale apps show a wall of identical dots. redLUX builds on the pentatonic shapes you already know (shown as circles), then adds triangles to reveal the modal flavor notes — the ones that turn A Minor Pentatonic into A Dorian or unlock the dark tension of Phrygian. ·Bridge basic fretboard patterns and advanced modal theory in seconds ·Instant target tones: your eyes jump straight to the notes that define each mode's sound ·Shape-based design stays crystal clear in bright sunlight and for color-blind players — no color-coding required ·Diagnose your own solos: understand why a note creates tension or release over a chord PRO-GRADE GUITAR TUNER ·Fast, accurate chromatic tuner with automatic string detection ·Multiple visual modes: Needle, Bar, Strobe, and Waveform scope ·Adjustable reference pitch and noise filtering for noisy rooms ·Left-handed mirror mode and a clean, distraction-free display CHORDS, TRIADS & VOICINGS ·Huge searchable library of chords with multiple voicings and inversions ·Triads and arpeggios across every string set ·Power chords for rock and metal ·Save your favorites and organize them into custom folders SCALES, MODES & FRETBOARD MASTERY ·Every essential scale and mode, plus exotic and world scales for players who want to go further ·Pentatonic-first learning: see each mode as the box you already know + its flavor notes ·Triangle markers pinpoint the modal target tones for soloing and improvisation ·Clear position boxes — no overwhelming full-neck wall of dots ·Chord-aware scale suggestions — see exactly which scales fit your chords ·Interactive fretboard trainer to learn the neck for real BACKING TRACKS & JAM ·Built-in backing tracks library with folders and a rich player ·Improv mode pairs scales to your progression so you always know what to play ·Loop, organize, and practice over grooves in any key RECORD OVER ANY BACKING TRACK ·Record your playing mixed perfectly in sync with the backing track ·Adjustable mix levels, input selection (including USB-C interfaces) ·Take library to play back, rename, share, and manage your recordings SONGWRITING & PROGRESSION STUDIO ·Build chord progressions and instantly see scales that fit ·Songbook with lyrics, transpose, and smart capo suggestions ·"Suggest next chord" to break through writer's block LEARN & EAR TRAINING ·Ear-training and chord/scale quizzes that level up as you improve ·Daily practice streaks to build a real habit ·Guided lessons and deep-dive theory essays BUILT FOR EVERYONE ·Full left-handed support ·Accessibility options: high contrast, larger tap targets, bold text, reduced motion, and Dynamic Type ·VoiceOver support throughout ·Available in 8 languages ·Optimized for iPhone and iPad Download redLUX Guitar today and turn every practice session into progress. redLUX Guitar is free to download with core features included. Unlock the full creative toolkit with redLUX Pro.