Tunelight

Pluck a string. It turns green when it’s in tune.

A guitar and ukulele tuner for iPhone and iPad. Tunelight finds the string you pluck and shows which way to turn the peg. Tune the last string and every string lights up.

Tunelight on iPhone: string 4, D3, in tune at 0 cents. Little Light sits at the center of the light bar, and the three tuned strings each have a sticker under them.

A sticker for every string

Tune a string and a sticker lands under it. Tune them all and you get a keepsake card to save to Photos or share.

Free to tune

Tuning is free for good, with Standard, Half Step Down and Drop D on guitar, and Standard and Low G on ukulele. Tap a string’s note to hear it. Common stickers, keepsake cards, both pointer styles (Little Light and Dot) and the Strobe display are free too.

Pay once for Full Version

All 51 tunings with Chromatic (A1–B6) and an adjustable A4 (436–446 Hz). Shift raises or lowers every target note by half steps, for a capo or a lower tuning. My Tunings lets you set each string’s note and save your own. 5 rare stickers you collect as you tune, and you’ll get all 5. Keepsakes, with every card on a timeline and a calendar. No subscription, no ads.

Your sound stays on your iPhone or iPad

Sound is measured live on your iPhone or iPad and is never recorded or uploaded. Your keepsake cards and your own tunings stay on your device. Anonymous usage statistics help us improve Tunelight; you can turn them off in Settings.

Download on the App Store For iPhone and iPad, iOS 26 / iPadOS 26 or later · in 8 languages