Bassist Buddy is a music theory reference and practice tool built for bass guitar players. Select any of 30 major and minor keys — including all enharmonic pairs — and instantly see the notes in the key, the 7 diatonic chords, and a bass fretboard diagram showing exactly where to play them. Key Features: • Circle of fifths with all 30 keys — tap any segment to select • Diatonic chords with chord quality labels and Roman numeral analysis • Chord enhancements — Major 7, Minor 7, Dominant 7, Sus chords, Diminished, Augmented and more • Bass fretboard showing all chord tones and scale notes in position, tap fretboard dots to hear individual bass notes and try out different base lines in the app • 7 modes — Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, Locrian • Chord Progression builder — arrange a progression of 4, 8, 12, or 16 bars, set rhythm patterns, play at any tempo - play your bass along with the progressions and practice your improvisational skills • Karplus-Strong plucked string audio synthesis • Setup Bass page, including - Support for a 5 and 6-string basses in a new Set up Your Bass page - Custom tuning support per string • Full dark mode support • Support for pentatonic scales on the fretboard • Consistent nomenclature for the degrees shown on each of the scale notes for a chord being displayed. Root of selected chord is always 1, regardless of its degree in the Diatonic Scale. • Scale display selection in the chord progression table