Trusted by 100,000+ guitarists, bassists and string players
The chromatic guitar tuner
for your wrist.
Sub-cent pitch detection for guitar, bass, ukulele and any string instrument. A4 calibration from 430 to 450 Hz, a pro metronome and a 240-chord dictionary. Works fully offline on Android phones and Wear OS smartwatches.
Sub-cent pitch detection for guitar, bass, ukulele, violin and any string instrument. Real-time Hz, cents and note name with frequency smoothing for stability in noisy rooms.
Pro Metronome
40 to 240 BPM across 13 time signatures, from 4/4 to compound 12/8 meters. Rhythm patterns, tap tempo and visual beat indicator.
A4 Calibration
Reference pitch from 430 to 450 Hz. Use 432 Hz for natural tuning, 442 to 443 Hz for European orchestras, or lower for period instruments and historically informed performance.
Wear OS Companion
A full chromatic tuner on the watch, not a remote control. Listens through the smartwatch microphone. Available in 6 languages.
NEW
Special tunings
Visual presets for Drop D, Open G, DADGAD and more guitar tunings, plus ukulele, bass, violin and cavaquinho. Each string lights up when it hits the target note, with the chromatic engine below for double confirmation.
Chord dictionary
240 diagrams for acoustic guitar, electric guitar and ukulele. Left-handed mode with one tap. Fully offline, with search by chord name or type.
Preview
See it in action
Frequently Asked
Questions, answered.
Is TunerWear free?
Yes. TunerWear is free with optional ads. A one-time in-app purchase removes ads if you'd like a cleaner experience.
Does it work without internet?
Yes. After install, the tuner, metronome and chord dictionary all work fully offline. No account, no sign-up.
Which instruments does TunerWear support?
Guitar, bass, ukulele, violin, viola, mandolin, banjo, and any chromatic-tunable string or wind instrument. The chromatic mode picks up any pitch from your microphone.
Is there a Wear OS version?
Yes. TunerWear ships a dedicated Wear OS app so you can tune straight from your wrist, without pulling out your phone.
How accurate is the tuner?
Sub-cent precision using FFT-based pitch detection with frequency smoothing for stable readings, even on low-end devices.
Can I change the A4 reference frequency?
Yes. A4 calibration lets you tune to any reference from 430 to 450 Hz. Default is 440 Hz (modern concert pitch). Use 432 Hz for natural tuning, 442 to 443 Hz for European orchestras like Vienna or Berlin, or lower references for Baroque and Classical period instruments.
Does it include a metronome?
Yes. The built-in metronome supports adjustable BPM, multiple time signatures (4/4, 3/4, 6/8 and more) and rhythm patterns including eighth notes, sixteenths and triplets.
Is there a chord dictionary?
Yes. Browse multiple voicings for guitar, electric guitar and ukulele. Each voicing plays back sampled audio so you can hear before you play.
What permissions does the app need?
Just the microphone, used solely for live pitch detection. Nothing is recorded, uploaded or stored.
Does the tuner work in noisy rooms?
It works best in a quiet space, but the built-in noise rejection and frequency smoothing help maintain a stable reading even with mild background noise.
Does it support electric guitar?
Yes. The chord dictionary has separate diagrams for acoustic and electric guitar, plus ukulele.
Is there a left-handed mode?
Yes. All chord diagrams switch to left-handed with one tap.
Which tunings does it support?
Any tuning, because the chromatic engine shows the exact note and cents instead of locking to presets. Standard EADGBE, drop D, drop C, open G, open D, DADGAD, half step down (Eb) and full step down all work directly. See our tunings guide for details and artist examples.
How is sub-cent precision possible?
The tuner uses FFT-based pitch detection with frequency smoothing, which averages successive frames to cancel jitter. The result is a stable reading well below one cent of deviation, even on entry-level phones.
Do I need a smartwatch to use it?
No. TunerWear works as a regular Android tuner app. If you have a Wear OS smartwatch, the companion app tunes directly from the watch microphone, without needing the phone in hand.
Ready to play?
Your perfect pitch starts here.
Download Tuner Wear for free. Chromatic tuner, pro metronome and 240-chord dictionary. No account, no signup, fully offline.
