String Tuner: Violin & Cello for iPhone and Android

Overview

What it is, in plain words.

String Tuner: Violin & Cello is a tuner designed for the arco tone of violin, viola, cello and double bass, covering 47 instruments on iOS and 60 on Google Play. The needle holds still on a bowed note and shows how many cents to adjust. It adds a drone, tanpura, metronome and an intonation trainer, and it works offline without ads.

What is it?

String Tuner: Violin & Cello is an instrument tuner and practice tool with a detector made for bowed strings.

What problem does it solve?

Many tuners jump around on a bowed note, with its rich harmonics, vibrato and low strings. This tuner is built for arco playing, so the needle stays calm and tells you exactly how many cents to go, and you can also tune by ear against a reference tone.

Features

Everything it can do.

Bowed-string detector
A detector made for arco tone, including harmonics, vibrato and low strings.
Reference tone
Hear a reference tone on every string and tune by ear.
Adjustable reference pitch
Set the reference from 392 to 466 Hz, with one tap for baroque 415, orchestra 442 and 443.
Alternative tunings
Use scordatura presets, Pythagorean fifths, just intonation and fiddle cross-tunings AEAE, ADAE and GDGD.
Many instruments
Tune bowed, plucked, world and wind instruments and voice, with a vocal range finder.
Drone and tanpura
Play a drone in any key with several voices, plus a tanpura and shruti box for Indian classical practice.
Metronome
Use subdivisions, accents, tap tempo and a visible beat.
Intonation trainer
Play a scale over the drone and see on a heatmap which notes ran sharp or flat.

Screenshots

See it up close.

How it works

Up and running in three steps.

Choose your instrument
Pick an instrument and a tuning, and set the reference pitch if needed.
Play a note
Bow or play the string and watch the needle and the cents readout.
Adjust and practice
Tune to the center, or use the drone, metronome and intonation trainer to practice.

Who it is for

Is it for you?

Violin, viola, cello and double bass players, students and teachers, and players of many other instruments who want one tuner and practice tool. Teacher mode lets you share the same setup with a class as a QR code.

Get the app · App Store Get the app · Google Play

Privacy and permissions

Private by design.

The store listing says the microphone is analyzed live and never recorded, with no account, sign-in, analytics or servers, and that the app works in flight mode and is free with no ads. The camera turns on only when you load a teacher's setup from a QR code. The privacy page also mentions a one-time Pro purchase handled by the App Store or Google Play, while the store listing says every instrument and tool is included.

Read the privacy policy