음악 친구 (Music Friend) is a luxury, distraction-free music practice companion and repertoire tracker designed to turn messy daily practice into mastery.

Crafted with high-end editorial typography and warm minimalism inspired by fine concert wood and classic score engraving, 음악 친구 gives musicians an inspiring, focused home for their daily routine.

✨ KEY FEATURES:

📅 PRACTICE CALENDAR & HEATMAPS
• Weekly Practice Breakdown: Inspect daily logs with song-by-song minutes, technique notes, and focus areas.
• Monthly Heatmap Grid: Visual view of your monthly practice consistency, streaks, and total hours logged.
• Practice Analytics: Monitor weekly trends, session totals, and daily averages.

🎼 BUILT-IN SHEET MUSIC VIEWER
• View PDF sheet music scans and photo uploads directly inside the app with sharp canvas rendering.
• Offline IndexedDB score storage — your music is available instantly without waiting for cloud downloads.
• Interactive page navigation and full-screen score viewing.

⏱️ LIVE PRACTICE ROOM & METRONOME
• Distraction-Free Practice Mode: An isolated, calm console designed to keep you in flow state.
• Flexible Time Signatures: Full metronome support for 4/4, 3/4, 6/8, plus 0/0 (free time), 2/2 (cut time), and 12/8.
• Practice Session Timers: Set custom countdowns with acoustic bell chimes or upload your own device audio.

📚 COMPLETE MUSICIAN TOOLKIT
• Random Note Synthesizer: Type or tap any musical note (e.g. C4, F#5, Eb3) to hear it synthesized in real-time.
• Key Signature Reference: Comprehensive chart of all major and minor key signatures.
• Musical Terms Glossary: Quick dictionary for essential directions, tempos, dynamics, and articulations.

🎨 6 BESPOKE COLOR PALETTES
• Classic Cadence, Midnight Slate, Berry Rose, Warm Vintage, Rosy Mahogany, and Peach Glow.
• Custom Wallpaper: Upload photos from your device with adjustable blur and opacity.
• Daily Inspiration: Rotating daily quotes from legendary musicians.

🔒 100% PRIVATE & OFFLINE-FIRST
Your practice is personal. 음악 친구 requires no account, collects no telemetry, and stores 100% of your data locally on your device.