For violin, viola, cello, double bass and fretless bass

Play in tune.
See it, cent by cent.

An intonation trainer for fretless instruments that shows how sharp or flat each note is as you play, then your pattern per scale degree. With a precise tuner, drones and a practice log.

14-day free trial
No credit card needed
Runs in your browser

Sound familiar?

Intonation drifts and you only notice later

The third finger creeps sharp in second position, and nobody points it out until the lesson.

A tuner shows one note, not your habit

You need to know which scale degree you're always sharp on, not just whether this A is in tune.

Drone practice means yet another app

A drone app, a tuner app, a metronome app, and none of them keeps a record.

The tools, and what each one does

All in one app, next to your practice log and statistics, so every session adds up.

Intonation Trainer

Uses your mic

Play and see in real time how far sharp or flat you are, then the pattern per scale degree afterwards.

Tuner

Uses your mic

A chromatic tuner that reads to a tenth of a cent and holds steady.

Backing Drones

A sustained drone or I-V loop in any key, the classic way to practise intonation.

Scale Recognition

Hear an ascending scale and identify it.

Metronome

Adjustable tempo, time signatures and tap tempo.

Speed Trainer

Slow down or speed up an audio file or YouTube video to learn a passage.

Melodic Dictation

Hear a short melody and write it down on a staff, notes and rhythm.

Sheet Music Writer

Write, hear and export sheet music with clefs, key, time signature and tempo.

Practise, log, repeat

1

Start the free trial

Choose Individual & Band. 14 days free, no card, every tool unlocked.

2

Open a tool and play

Allow the microphone when a tool asks for it. Start the practice timer so the session is logged.

3

Watch the numbers move

Your statistics show time per focus area and your scores over the weeks, so you know what to work on next.

One plan, every tool

These tools are part of the Individual & Band plan, together with the practice journal, statistics, 30+ other tools, your song library and a band workspace. VAT included.

$9.99
per month
$79.99
per year

See every tool and the full plan on For Musicians · Playing in a band? For Bands

Questions

Which instruments does the Intonation Trainer work with?

Fretless instruments: violin, viola, cello, double bass and fretless bass. It listens through your microphone.

Which browser works best?

Chrome on a computer, tablet or Android phone gives the best results with the microphone tools. Safari's support for them is limited.

Which plan includes these tools?

Individual & Band, $9.99 a month or $79.99 a year with VAT included. It also includes the practice journal, statistics, 30+ other practice tools, your song library and a band workspace. 14 days free, no card needed.

Do I need to install anything?

No. BandFlow runs in the browser. Allow microphone access when a tool asks for it.