JustChords vs String Theory

JustChords is your complete tool for cataloging chord charts and lyrics. Create charts from scratch, import them from files, or pull them from online sources — building a library that's always with you, synced across iPhone, iPad and Mac via iCloud. Use JustChords standalone or as an AUv3 plugin in your favorite DAW. FEATURES • Setlists, with sharing and collaboration • Song editor is based on ChordPro and supports chords & lyrics, note sheets (PDF), chord beats, guitar tabs and ABC notation • Change Key, Capo, Piano Transpose, Rewrite into key • Metronome & Tuner • Autoscroll • Guitar, ukulele and piano chord diagrams, including alternate tunings • Audio player & recorder. Attach your tracks from Apple Music, Spotify, YouTube, URL or local file • Project lyrics or a dedicated stage display via AirPlay, with rich configuration options • Bluetooth / MIDI pedal support • Chord Beats — visualize chord duration right in your chords & lyrics, send chord notes over MIDI as they play, and trigger predefined MIDI messages on section changes • Tonic Pad — an ambient backing pad matched to your song's key • PlayTogether — keep your whole band in sync live, hands-free

String Theory is a focused guitar tool for exploring scales, visualizing the fretboard, matching chords, and capturing riff ideas without clutter. Build better fretboard awareness with an interactive scales map, compare two scales at once, test custom tunings, and find compatible chords in seconds. When inspiration hits, record the idea and save it to your riff vault with notes and playback. Features: • Interactive guitar fretboard with scale mapping • Major, harmonic minor, melodic minor, and pentatonic scale families • Scale Finder and Chord Finder tools • Chords-to-scales matching • Add a second scale overlay for comparison • Custom tunings with per-string octave control • Left-handed fretboard mode • Fullscreen fretboard view • Riff recording, playback, rename, share, and vault organization • Light/dark mode, 3 color themes, haptics, and a polished liquid glass interface Whether you’re practicing improvisation, learning theory, or saving new ideas, String Theory keeps the essential guitar tools in one fast, modern app.