Tuner and metronome for iPhone and iPad
Play a string and Acord shows the note, how many cents you're off and which way to turn — for guitar, bass, ukulele, violin and 28 more instruments. Then practice with a metronome that clicks on the exact sample, even with the screen locked. No account, no ads.
Coming soon on the App Store
Coming soon · Free to download, optional Acord Premium
Most tuners show a number. Acord shows the note, the direction and when to stop — and remembers which strings are done.
Tuner
Acord finds the string you play by itself and swings a calm needle to it: amber when you're flat, red when you're sharp, green when it's right. Each string gets a check once it's in tune. Tap a string to hear its note and tune just that one.
Instruments
Guitar with 6, 7 or 12 strings, bass up to 6 strings, ukulele, violin, viola, cello, double bass, mandolin and banjo, plus world instruments: bouzouki, bağlama, oud, balalaika, domra, dombra, cavaquinho, charango, cuatro, vihuela, bandurria, erhu, pipa, shamisen and more. Alternate tunings include Drop D, DADGAD and open G. Or pick Chromatic and tune anything.
Metronome
Clicks are mixed into the audio at their exact sample, so the tempo holds for as long as you play. Tap the tempo, pick any time signature, accent any beat, add eighths, triplets or sixteenths, and let the speed trainer raise the tempo every few bars. It keeps going with the screen locked and plays along with your music.
Strobe
Stripes drift left when you're flat, right when you're sharp, and stand still in tune.
Reference pitch
A4 at 440 Hz by default, or anything from 415 to 466 Hz for orchestras and baroque ensembles.
Note names
In the spelling your language uses: Ré in French, Dó in Portuguese, До in Russian, ド in Japanese.
Private
The microphone is used only while the tuner is open, to hear the note. Nothing is stored or sent.
Acord is free to download, with no ads and no account. Acord Premium is $2.99 a week or $19.99 a year with a 3-day free trial, $4.99 a month, or $29.99 once for life. Prices are in US dollars.
Free
The chromatic tuner, standard guitar, bass, ukulele and violin tuning, the metronome with two sounds, and the pitch pipe.
Acord Premium
All 32 instruments and their tunings, strobe, any reference pitch, accents, triplets and sixteenths, the speed trainer and practice timer, four more metronome sounds, warm and organ tones, and drones with a fifth.
Acord measures the pitch with the YIN method on the raw microphone signal, to a fraction of a cent on a clean tone, and smooths the reading so the needle stays calm. Real strings are slightly stiff, so their overtones run a little sharp; any tuner that listens to the whole sound reads them within a cent or so.
Yes, down to the low B at 31 Hz. Phone microphones pick up little of such a low fundamental, so Acord reads the string from its overtones.
32, with 67 tunings: guitar (6, 7 and 12 strings), bass, ukulele, guitalele, violin, viola, cello, double bass, mandolin, banjo, Irish bouzouki, bouzouki, bağlama, oud, balalaika, domra, dombra, cavaquinho, charango, cuatro, vihuela, guitarrón, bandurria, tres, erhu, pipa, shamisen, sanshin and more. Chromatic mode tunes anything else, including your voice.
Yes. It also mixes with music from other apps, so you can play along.
No. The tuner listens only while it's open, analyses the sound in memory to find the note, and never records, stores or sends anything. There's no account and no tracking.
Yes. The chromatic tuner, standard guitar, bass, ukulele and violin tuning, the metronome and the pitch pipe are free with no limits. Acord Premium adds every other instrument and tuning, strobe, any reference pitch and more.
Acord for iPhone and iPad. Free to download, with Acord Premium for every instrument.
Coming soon on the App Store