Guitar Tuner

Tune your 6-string acoustic or electric guitar with your device's built-in microphone. Standard tuning (EADGBE), Drop D and five more presets are included at no charge. Tune one string at a time Allow microphone access, then pluck a string. Use automatic string detection or select a string yourself in manual mode. Follow the pitch indicator as you turn the tuning peg, then move to the next string. Tune by ear Play a reference tone and match your string to the sound. Repeat playback lets you keep listening while you adjust. Seven included tunings - Standard (EADGBE) - Drop D and Double Drop D - Open D Major and Open D Minor - Open A and Open A Minor More tunings with an optional upgrade The preset-tuning purchase unlocks the remaining 14 presets: - Drop C and Drop B - Open C, Open G and Open E - Open C Minor, Open G Minor and Open E Minor - DADGAD (D Modal) - Half Step Down and Whole Step Down - Low C and New Standard - Compensated standard tuning at a fixed A4 reference of 440 Hz Other optional upgrades - Custom tuning: choose a note for each string, then save and reuse one custom tuning. - Reference pitch calibration: adjust the A4 reference from its default 440 Hz to match another instrument. The fixed-reference preset above stays at 440 Hz. - Remove ads: remove both banner and interstitial ads. Each upgrade is a one-time purchase. The all-in-one purchase includes all preset tunings, custom tuning, reference pitch calibration and ad removal. The free app contains ads. Custom tuning and calibration are separate from the preset-tuning purchase unless you choose the all-in-one option.