Intonaire - Tuner & Metronome

When your pitch is right, the screen glows clear and bright. When it drifts, it fades. Intonaire is built around that one feeling, so you're not just reading numbers off a dial, you're watching and feeling whether your sound is actually in tune, the way you'd learn from a teacher standing next to you.

PRECISION TUNER
Intonaire supports violin, viola, cello, double bass, guitar, and ukulele. Pick your instrument and the strings on the fingerboard change to match; the moment you land in tune, the display glows gold and gives a gentle haptic pulse so you can feel it as much as see it. Set your reference pitch freely, 415, 440, 442 Hz and beyond, for whatever ensemble or era you're tuning to.

PITCH MIRROR
Your pitch is drawn as a live curve in real time as you play, not just a needle that jumps around. Watch a long tone for wobble, check whether your vibrato is even and centered, or simply see how steady your bowing really is once it's laid out in front of you as a line instead of a number.

METRONOME, DIGITAL AND ANALOG
A crisp digital click sits alongside an analog mode with a swinging pendulum and warm wooden ticks, for whichever feel suits your practice. Time signatures, accents, and a speed trainer that gradually ramps the tempo up are all built in, so you can work a passage from slow and clean to full speed without switching apps.

DRONE
Hold a sustained reference tone and tune your intervals over it, the classic way string players train intonation against a fixed pitch rather than a moving one. It's a simple tool, but it's the one exercise that shows up in nearly every serious method book.

PRACTICE LOG AND STATS
Record your practice sessions and keep them on a calendar you can actually look back on. See monthly and custom-range practice time, stats broken down per instrument if you play more than one, streaks that keep you honest, and daily goals that turn practice into something you track rather than something you hope you did enough of.

BUILT TO LAST
Intonaire supports Korean, English, and Japanese, and backup and restore means your practice history survives a device change instead of starting over from zero. No ads anywhere in the app, no subscription, and no recurring charge of any kind.

FREQUENTLY ASKED QUESTIONS

Is Intonaire a subscription?
No. It's a single one-time purchase. Buy once and every feature, including anything added to the app later, is yours permanently.

Which instruments does the tuner support?
Violin, viola, cello, double bass, guitar, and ukulele, each with its own fingerboard display so the strings you see match the instrument you're actually tuning.

What is the Pitch Mirror for?
It draws your pitch as a live curve instead of a single needle position, so you can watch long tones and vibrato for stability over time rather than just checking a single instant.

Can I change the reference pitch away from 440 Hz?
Yes. You can set 415, 442, or any reference pitch your ensemble or repertoire calls for, and the tuner recalculates against it.

Does the metronome do more than keep a basic beat?
Yes. Beyond the digital click and analog pendulum modes, it supports time signatures, accents, and a speed trainer that gradually increases tempo as you practice a passage.

What happens to my practice history if I switch phones?
Backup and restore lets you carry your full practice log, streaks, and stats over to a new device instead of losing your history.

Intonaire is the one app string players open before, during, and after every practice session.