Tono · Afinador de Guitarra

A guitar tuner that does one thing and does it well.

Open the app and it's already listening. Pluck a string and instantly see the note, the frequency (Hz), and how much tuning you need.

NO ADS, NO ACCOUNTS
There are no ads while you're tuning. No registration or email required. Tuning doesn't need an internet connection, so it works just as well in rehearsals, on stage, or in your backyard.

DESIGNED FOR FAST TUNING
- Large, stable needle, easy to read with the guitar on your lap
- Clear colors: green when in tune, amber when it's almost there
- Marks each string that's tuned, so you don't lose track
- Arrows indicate whether to increase or decrease the tension
- Dark screen, won't dazzle in low-light conditions
- The screen stays on while you're tuning

ENLARGED VIEW
One tap and the note fills the entire screen, with large indicators for raising or lowering the tension. To read it from a distance, out of the corner of your eye, or with both hands on the guitar.
You change strings by sliding.

SOUND WHEN TUNING
A short alert when the string reaches the pitch, so you don't have to look at the screen. Activated in Settings.

TUNINGS INCLUDED, ALL FREE
- Standard (E A D G B e)
- Drop D
- Open G
- Half step down (E♭)
- One step down (D)
- DADGAD

All alternative tunings are included from day one.

ADJUSTABLE CALIBRATION
The A4 reference can be adjusted between 430 and 450 Hz, for playing with an out-of-tune piano, an old recording, or in an ensemble with a different reference.

TWO MODES OF USE
- Manual: You choose the string and the app guides you to the exact pitch, no matter how far off it is.

- Automatic: You play any string and the app recognizes which one it is. Ideal for

tuning a guitar that's already close to pitch.

The app remembers the tuning, calibration, and mode you were using.

The app tells you which string it is, which way to turn it, and when to stop. A clear reading, with nothing in between.

It works with acoustic, classical, and electric guitars, using the phone's microphone.

Tone is offered free of charge. There is no guarantee of response times or future improvements.