Orchestra String Tuner

String Tuner is designed for open-string tuning on violin, viola, and cello. Supported open strings: • Violin: G3 / D4 / A4 / E5 • Viola: C3 / G3 / D4 / A4 • Cello: C2 / G2 / D3 / A3 Key features: • Real-time pitch detection using the microphone • Adjustable A4 reference: 440 / 441 / 442 / 443 / 444 Hz • Reference tone for every supported open string • Designed for iPhone and iPad • English interface designed for musicians worldwide Use it before individual practice, orchestra rehearsal, or ensemble preparation. Microphone detection stops while a reference tone is playing, preventing the app from measuring its own output. Microphone audio is used only for on-device pitch analysis. Audio is never recorded, stored, transmitted, or uploaded.