guico is a chord quiz app designed to help you build both fretboard literacy and real playing intuition. Just strum the chord shown on the screen, and the app instantly recognizes the sound to verify your fingering. It transforms chord study from static diagrams into a hands-on experience that syncs your eyes, ears, and fingers. Key Features Real-time Chord Detection Strum chords like G, Am7, or Dadd9, and get instant feedback on your accuracy. Step-by-Step Quiz Modes Progress naturally from basic open chords to barre chords, sevenths, and complex jazz voicings. Mistake Review Smart tracking allows you to revisit only the shapes you struggled with to ensure total mastery. Focused Practice Environment A clean, distraction-free interface designed to keep you focused on the strings. Perfect For Guitarists looking to speed up their sheet music and fretboard reading. Performers who want to reduce "thinking time" during fast chord changes. Theory Students who know how chords are built but struggle to find them on the neck. Self-taught Players mastering rhythm guitar and chord-based songwriting. With just a few minutes of practice each day, guico makes reading chords feel like second nature—leaving your hands ready to react as fast as you can think.