Hey Product Hunt! 👋 I'm Juan, a software engineer from Colombia and guitar enthusiast. I built Frettar to solve a problem I faced as someone who loves both coding and music education. Why Frettar? Teaching guitar concepts visually can be challenging. I wanted a tool that could quickly create clear fretboard diagrams for lessons, with the added benefit of audio playback so students can hear what they're learning. What makes it special: ✨ Interactive 24-fret guitar visualization 🎵 Real-time audio playback for notes and chords 🎨 Customizable colors for organizing patterns 📝 Right-click annotations for detailed notes 💾 Save/load configurations locally 📸 Export as PNG for sharing 🔓 Completely free and open source Perfect for guitar teachers creating lesson materials, students practicing scales and chords, or musicians documenting song arrangements. I'd love to hear your feedback, especially from fellow musicians and educators! What features would make this even more useful for your needs? Try it out and let me know what you think! 🎸

Frettar

Interactive guitar fretboard marker for music education

Interactive guitar fretboard marker for music education