Privacy policy

Last updated October 2, 2026 · Beta version

Allegrow is in beta and is currently run by an independent developer. This policy explains, in plain language, exactly what the apps do with information. If anything is unclear, ask us.

The short version

The practice timer never records. Allegrow listens through the microphone to time practice, but the sound is analyzed on the phone, tablet or computer itself. It is never recorded, stored or uploaded.
Recordings only when a parent allows them. If a parent turns it on, a child can record a short clip of an assignment and send it to their teacher. Nothing is recorded until they press Record, nothing is sent until they press Send, and recordings are deleted after 30 days.
We collect as little as we can. A name or nickname for each child, practice numbers (minutes, days, scores and badges), and – only if a parent or teacher adds one – a small photo.
Parents are in control. A parent signs in to set up the family app, and the family’s practice is kept in that private family account. Only the family’s parent accounts and the practice devices a parent adds can see it, and a parent can remove any device at any time. Nothing goes to a teacher unless a parent connects one.
No ads, no tracking, no selling data. We don’t use advertising or analytics services, and we never sell or rent information.

Who Allegrow is for

Allegrow has two parts: the family app, used by children to time their music practice under a parent’s supervision, and Allegrow Studio, used by music teachers. Children don’t create accounts and aren’t asked for contact details. A parent signs in to set up the family app and decides what is shared.

What information we handle

Where	What	Where it’s kept
Family app	Each player’s name or nickname, an optional photo added by a parent (shrunk to a small 128 × 128 picture), instrument, color, practice times and minutes (including practice logged by hand), practice scores worked out on the device (focus, tuning, rhythm), badges, practice plan and app settings. A parent PIN, if you set one, is kept only on that device, scrambled (never as the digits).	On your device. Once a parent signs in, also in our database, where only that family’s members can reach it: the parent accounts and the practice devices a parent added with a one-time code. A practice device is identified by an anonymous device ID, not by a person’s account. When a parent removes a device, it loses access and clears itself.
Parent account	When a parent signs in (with Google, Microsoft, Yahoo or an email and password): their name and email, and which family they belong to. Used to set up and open the family, to bring the family back on a new device and – only if they turn it on – to send a weekly summary of the family’s practice (every summary has an unsubscribe link).	In our database. The family’s record lists its parent accounts; each parent’s own sign-in record is visible only to them.
Connected to a teacher	Only after a parent agrees: the child’s photo if one was added, their practice summary for the last 60 days, a month-by-month practice history (minutes, days and practice scores, starting two months before they connected, kept for 3 years) for the teacher’s progress reports, badges, assignment check-offs, which teacher stars they’ve seen and which challenges they’ve finished.	In our database, on that student’s record, visible to that teacher. Monthly history older than 3 years is removed automatically.
Recordings for the teacher (optional)	Only if a parent turns on recordings for a connected child: short audio clips (up to 90 seconds) the child chooses to record and send for an assignment, with the date and the teacher’s written reply.	In our database, on that student’s record, visible to the family and that teacher. Recordings are deleted automatically after 30 days (and only the newest 12 are kept).
Billing (teachers)	Lesson prices, payments and balances a teacher records for their students, and – if the teacher turns on payment reminders – the billing email addresses they add for each family.	In our database, visible only to that teacher (and the administrators of their music school, if they’ve joined one). If the teacher turns on sharing, the family sees their own balance, what’s due and recent charges and payments in the family app (which needs a parent’s sign-in or PIN). Reminder emails go only to the addresses the teacher added, and every reminder has a link to stop them.
Allegrow Studio	The teacher’s sign-in name and email (Google, Microsoft, Yahoo or email and password), studio name, and the student information the teacher enters: names, an optional small photo, an optional birthday (month and day only, no year), instruments, repertoire, files and demo recordings the teacher attaches to assignments, lesson times, practice plans, lesson notes and ratings, assignments, recitals and exams, badges and stars.	In our database, visible only to that teacher (and to the family, for the parts that appear in their app) – and, if the teacher belongs to a music school, to the school’s administrators as described below.
Music schools	If a teacher joins a music school on Allegrow: the school’s name, its teachers’ names and emails, whether each teacher is active, and who handles their billing; school events with the students taking part; and tasks the school gives its teachers.	In our database. The school’s administrators can open each member teacher’s studio and see everything in it – students, lessons, practice, assignments, recordings, performances and billing – except the teacher’s private lesson notes, and see the school rolled up by teacher. Teachers see the school’s events and their own tasks. If a teacher leaves or is removed, their students stay with the school.
Booking page and lesson changes	If a teacher turns on booking: what a family types into the teacher’s booking page (student’s name and age, instrument, experience, a parent’s name, email and phone, notes) and whether they agreed to the studio’s policies; lessons a parent cancels in the family app and makeups they ask for; and the family email a teacher adds for lesson and payment reminders.	In our database, visible only to that teacher (and, for cancellations and makeups, the family). Every reminder email has a link to stop them.
Beta requests, contact and feedback	What you type into the forms – for example your name, email, studio and message.	In our database, visible only to the Allegrow team.

Children’s privacy

Allegrow is designed to be used by children, including children under 13, with a parent or teacher. We follow these rules:

We don’t ask children for personal information and we don’t let children make public posts or contact other people.
A parent must agree, in the app, before a child’s practice is shared with a teacher. The date of that agreement is saved on the student’s record.
When a teacher adds a student to Allegrow Studio, the teacher confirms they have the family’s permission to use the student’s name for lessons (see the terms).
Photos are optional. Only a parent can add a child’s photo in the family app (which needs a parent’s sign-in or PIN). It is shrunk to a small picture on the device before it’s saved, is shared only with a teacher the parent connects, and can be removed any time in Parent settings. Teachers can add a small photo to help recognize a student only with the family’s permission.
Recordings are off until a parent turns them on in Parent settings (which needs a parent’s sign-in or PIN), for each child. They’re deleted automatically after 30 days, a parent or the teacher can delete one sooner, and disconnecting from a teacher can remove them all.
Parents can see everything the family app stores about their child in the app itself, and can delete it at any time (see “Deleting information” below). You can also ask us to review or delete your child’s information, or to stop any further use of it.

How we use information

Only to run Allegrow: to show practice and progress, share it with a connected teacher, show teachers’ assignments and lesson times to families, keep calendars up to date, send teachers the emails they turn on, and improve Allegrow using feedback you send us. We don’t use information to advertise to anyone.

Services that help run Allegrow

Google Firebase – the database, and sign-in for teachers and parents. If you choose to sign in with Google, Microsoft or Yahoo, that company confirms who you are and shares your name and email with us.
GitHub Pages and Cloudflare – host the apps and the calendar and email service.
Resend – delivers the emails teachers turn on.
Stripe – takes card payments from teachers who choose a paid plan. Card details go straight to Stripe; Allegrow never sees or stores card numbers, and keeps only the plan, the payment status and Stripe’s customer reference. Families never pay Allegrow. If a teacher turns on card payments, a parent can choose to pay that teacher by card: the payment page is Stripe’s, the money goes to the teacher’s own Stripe account, and Stripe receives the amount, the student’s first name on the receipt line, and whatever the parent types on that page. Allegrow never sees the card and keeps only the amount and date, in the teacher’s billing records.
Your browser’s dictation – if a teacher chooses Dictate for their notes, the speech is turned into text by the browser’s own speech service (Google in Chrome, Apple in Safari), under that company’s terms. Allegrow doesn’t receive or keep the audio.
Google Fonts and jsDelivr – deliver fonts and app code, including the open-source software that runs Allegrow’s sound-recognition model on your device. The model itself comes from Allegrow’s own site.

Like any website, these services see technical information such as your device’s IP address when the app loads. They process information only to provide their service to us.

Deleting information

Families: remove a player in Parent settings to delete their practice history (from this device and, with sync, from our database). “Disconnect” (or “Switch teacher”) stops sharing with a teacher, and can also remove the recordings, practice history (including the monthly history), badges and photo already shared with them. A parent account can be removed in Settings → Devices & sync.
Teachers: archive or delete a student in Allegrow Studio. Deleting a student removes their record and disconnects the family.
Anyone: contact us and we’ll delete information we hold about you or your child.

Keeping information safe

Family, student and calendar records can only be opened with long random codes, and each teacher’s studio can only be opened when signed in – by that teacher, or by the administrators of a music school the teacher has joined. A small number of Allegrow staff can also open accounts, only to help when you ask, fix problems or keep Allegrow safe; every change they make is recorded. When something in the apps breaks, they send us a short error report – what went wrong, on which page, and the browser – with no names, emails or practice in it. We keep the information we collect to a minimum. No system is perfectly secure, so please keep family codes and invite links private.

Changes

If we make meaningful changes – especially to anything involving children’s information – we’ll update this page and let families and teachers know in the app before the change takes effect.

Contact

Questions or requests about privacy: use the contact form.