About MusiCompanion

• A tuner that speaks the language of early music: every pitch from 380 to 460 Hz and the historical temperaments (Vallotti, Kirnberger III, Werckmeister III, Bach-Kellner, Young, meantone…), with their reference key.
• My instruments and my temperaments: up to 15 instruments saved with their pitch and temperament, and up to 15 personal temperaments set note by note.
• The historical winds assistant: play a few notes, and the app determines the pitch and natural temperament of your historical wind instrument. Its intonation scan shows for each note the correction needed for the chosen temperament and pitch, on a staff and in a table you can print as PDF.
• Truly in-tune drones: a real recorded piano and an organ, retuned to the chosen pitch and temperament, short or sustained, to work on the intonation of intervals and on ear training.
• A practice log to share: practice-session stopwatch recorded automatically in the calendar, comments dictated by voice, audio recordings, and sending your work to your teacher by e-mail or WhatsApp.
• Sing in tune: a vocal range test, vocal warm-ups accompanied on the piano, 12 progressive sung solfège exercises in which the microphone tells you whether the note is in tune, a drone for working on intonation (major and minor scales, intervals), and “Sing a melody”: a new melody every time, to read, tap and sing in 6 steps, with pitch and rhythm correction.
• To understand what you play: a complete Solfège section (notes, rhythm, time signatures, intervals, keys, chords, cadences, figured bass) with tests at two levels, composers from the Renaissance to the 21st century, ornaments with a comparative table of names and performance by country, and a glossary of every musical term.
• For young and old: the home screen and the My practice page speak to children informally, and everyone can hide the pages they don’t need. Ad-free.

MusiCompanion is a tool to put in your child’s hands to encourage regular practice: they see their sessions add up day after day, record and listen to themselves, and can send their work to their teacher.

Indicate in Settings that the app is used by a child: the home screen and the My practice page then speak to them informally. You can also hide the pages they don’t need (choose the “I’m learning music” profile). The app is ad-free, and its practice log and recordings stay on the device.

An old phone, even without a SIM card or a plan, works very well: you only need a Wi-Fi connection when installing it.

An Internet connection (Wi-Fi is enough) is needed only once, to open the app and install it on the home screen. It is then stored entirely on the device and works offline afterwards.

Without Internet, everything essential works: tuner, metronome, drones and sounds, Sing in tune, Solfège, composers, ornaments, glossary, my instruments, stopwatches, calendar, written comments, recordings (including downloading them) and backups. Once activated, the paid plan stays active offline.

An Internet connection is needed to:

• install the app and receive updates (they arrive at the next connection);
• sign in to your account, buy or manage a subscription;
• send your work by e-mail or WhatsApp (an e-mail prepared offline is sent at the next connection);
• dictate comments: on most phones, dictation goes through the Internet (without the Internet: type them on the keyboard);
• open the “Sources” links on the composer pages.

For a device that stays offline, saving a backup file (Settings › Backups) lets you transfer the work to another device, for example with a cable.

• Android: Android 8 (released in August 2017) or newer, with an up-to-date Chrome browser (version 111 from March 2023 or later). Since Chrome 139 (August 2025), Chrome updates require Android 10 (released in September 2019) or later.
• iPhone and iPad: iPhone 8, iPhone X, iPhone SE (2nd generation) or newer, with iOS 16.2 (December 2022) or later.
• Processor and memory: a quad-core processor and 2 GB of RAM are enough (most phones sold since 2018). On a slower device, the tuner may react a little more slowly.
• A working microphone (tuner, recordings) and a speaker or headphones (metronome, drones).

On an older device, the app may open, but some colours, the microphone or the sounds may not work properly.

When you first open the app, you enter your first name and your e-mail address to receive a 6-digit code: it starts a 10-day free trial (20 days for founding members), during which all the features of MusiCompanion Complete are available, with no commitment and no bank card. MusiCompanion does not keep your e-mail address: it is only used to receive this code.

After the 10 days, you have two options:

• Essential: €4.95 per year, ad-free. Metronome and tuner at 440 Hz in equal temperament.
• Complete: the whole app, ad-free, available as a subscription at €4.95 per month or €49.95 per year, or as a one-time lifetime payment of €139.
• “Founding members” offer, for early users who commit to sending us their suggestions for improvement and testing new versions: 20-day free trial, then €4.95 per month, €39.95 per year or one-time lifetime payment of €79.95 until 31 March 2027; from 1 April 2027, normal prices apply again. We also invite you to rate the app if you wish, freely and without any condition.

Prices include VAT. The paid plans will be on sale soon.

The app keeps evolving: updates are released regularly and are included in the Essential and Complete plans, including the lifetime plan.