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About the Guitar Tuner
Press Start tuner and allow microphone access, then play one string at a time. The big letter shows the closest note, and the meter shows how far off you are in cents. When the needle sits in the middle and turns green, you are in tune. Tighten a string to go higher (sharp), loosen it to go lower (flat).
It is chromatic, so it detects any note, not just guitar strings. That means it also works for bass, ukulele, violin and other instruments. Standard guitar tuning is shown for reference: E2, A2, D3, G3, B3, E4. If your instrument uses a different reference pitch, change the A4 value.
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