Tune guitar and bass with the mic — 4 to 8 strings, standard A4 = 440 Hz.
Get the Android app Read and confirm the notice, then download the APK — no sign-in required. Only from kuludulu.eu — do not redistribute.
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— Hz
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No tone yet — start the mic and pluck a string.
Tip: pin a string, pluck once and hold. Needle ±30 cents; “In tune” from about 2½ cents. A4 = 440 Hz.
Pitch: YIN (de Cheveigné & Kawahara, J. Acoust. Soc. Am. 2002). Mic audio is not uploaded.