⚠ Disclaimer
NOT RECOMMENDED FOR APPS FROM META, UBER, WHATSAPP, ANY GOOGLE APP REQUIRING AN ACCOUNT, OR ANY BANKING APP. RISK OF ACCOUNT BAN WITH CHANGED SIGNATURE.
For these apps, use Install to Device via USB or download as ZIP (uncheck merge) to preserve original signatures.
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piaco is a chord quiz app that helps you build both chord-reading skills and real playing intuition.
Just play the chord shown on the screen, and the app instantly recognizes the sound and checks your answer.
It turns chord study from theory-only practice into a hands-on experience that uses your eyes, ears, and fingers together.
🎹 Key Features
Real-time chord detection
Play chords like C, Em, or G7, and get instant correctness feedback.
Step-by-step quiz modes
Progress from basic triads to seventh and extended chords with increasing difficulty.
Mistake review
Revisit only the questions you missed to improve accuracy.
Focused practice environment
A clean, simple interface that helps you stay fully concentrated.
🎼 Perfect for
• Players who want to speed up chord reading
• Those who w