Main features: high-precision online chromatic tuner for guitar, bass, and ukulele with ±0.1 cent accuracy, real-time pitch visualization, built-in reference tones, and gamified rank system. Optimized for multi-device browser access with local audio processing for privacy. Core advantages include professional-grade accuracy, zero-latency feedback, and completely free usage. Typical workflow: select instrument → activate microphone → play single string → adjust based on real-time meter → achieve green perfect pitch zone → optional ear training with reference tones.
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