Chord Quiz: Learn Piano Chord

Chord quiz and chord search application.
There are two types of quizzes: chord name quiz and chord component note quiz.
Simple operation allows you to proceed the quiz smoothly.
In the chord list, you can search by tapping the piano keyboard.
Included 204 chords (12 root notes x 17 chord types).

Main Functions
- Chord name quiz (select minor, sevens, etc. with buttons)
- Chord component note quiz (select notes on the piano keyboard)
- Play chord notes
- Chord search (search by chord name or component notes)
- Chord details page (check chord type, component notes, inversion form)
- Quiz settings (time limit, waiting time, number of questions, chord type, inversion)
- Customization (dark mode, theme color)