PrezTune – Instrument Tuner

PrezTune is a fast, accurate instrument tuner that listens through your phone's microphone and shows you exactly how sharp or flat every string is — in real time.

Built for real players, PrezTune covers a huge range of instruments and tunings, from a 6-string guitar to a contrabass, with a precise needle meter and a clean digital readout of note, cents, and detected frequency.

TUNE 12 INSTRUMENTS
- Guitar — Standard, Drop D, Drop C, Open G, Open D, Open E, DADGAD, Half-Step Down
- 12-String Guitar
- Electric Bass — 4, 5 and 6-string
- Ukulele — High-G and Low-G
- Mandolin
- Banjo
- Puerto Rican Cuatro
- Cuban Tres
- Violin, Viola, Cello and Contrabass

TWO WAYS TO TUNE
- Tuning Detect— choose your instrument and string, and PrezTune locks onto the target pitch, guiding the needle to center.
- Manual Tuning — a full chromatic mode per instrument range that names any note you play, perfect for alternate tunings and quick checks.

PINPOINT ACCURACY
PrezTune reads your microphone's raw, unprocessed signal — no automatic gain, echo cancellation, or noise suppression getting in the way — so the pitch detector hears your true tone. A large percentage-based meter plus a cents readout make it easy to land dead-on.

PLAY A REFERENCE NOTE
Not sure what it should sound like? Tap Play Note to hear the exact target pitch for the selected string and tune by ear.

FOUR VISUAL STYLES
Make it yours with four hand-crafted looks — Classic (vintage meter + backlit LCD), Modern (clean and flat), Superheroes (bold comic pop), and Futuristic (neon HUD) — each with light and dark themes.

NO ADS, NO SUBSCRIPTIONS
Pay once and it's yours — no ads, no subscriptions, and no in-app purchases. Just a clean, focused tuner that does its job.

Whether you're tuning up before a set, restringing at home, or teaching a beginner, PrezTune is a reliable, great-looking tuner for your whole string family.

Note: PrezTune needs microphone access to hear your instrument. Audio is processed on your device to detect pitch.