Cleary Keys Studio
Privacy policy
Last updated 31 October 2026
The short version. Cleary Keys Studio is an app for piano teachers. Teachers keep their students, lessons and invoices in it, and can share a family page with parents. Your studio’s records are stored in the European Union. There’s no advertising, no analytics and no tracking, and we never sell data. A teacher can delete any student at any time, and anyone can ask us to delete their account.
1Who we are
Cleary Keys Studio is made by Cleary Piano Lessons, the sole proprietorship (eenmanszaak) of Lorcan Cleary in Amsterdam, registered with the Netherlands Chamber of Commerce (KvK) under number 90984757, trading as ClearyKeys. You can reach us at clearykeys@gmail.com.
For a teacher’s own account we are the controller under the General Data Protection Regulation (GDPR). For the students and families a teacher adds, the teacher decides what to keep and why, so the teacher is the controller and we process that data on their behalf, only to run the app for them.
2Teachers
Teachers sign in with Google. We receive your name, email address and profile picture from Google. You then add your studio details (studio name, address, phone, bank account, KvK and VAT numbers), your settings, terms, holidays and policies, and your own expenses, mileage and receipt photos.
3Students and families
A teacher can add, for each student: their name, age or date of birth, level, the parent’s name, email addresses, phone number and billing address, fees and tags, the lesson calendar, attendance, lesson notes, homework, pieces and scales, make-up credits, invoices, files and scores. Many students are children, so we keep this data private to the teacher and never use it for anything else.
If a teacher turns on a family page, the parent or student signs in with Google or with a link sent to their email address. We keep their email address so the app knows which family page they may open. On that page a family can ask to cancel a lesson or book a make-up lesson, and log practice; those requests are kept for the teacher.
If a teacher uses the online sign-up form, the details a family types (names, email, phone and a message) are kept until the teacher’s app collects them, and for at most 120 days.
4Payments
Families can pay invoices by iDEAL through Mollie B.V. in Amsterdam. For each invoice we keep a payment page with the amount, the invoice number, the studio name and whether it has been paid. Bank details for the payment go to Mollie and the family’s bank, not to us. Mollie’s own privacy statement applies to the payment.
5No advertising, no tracking
The app has no adverts, no analytics and no tracking cookies. It stores your sign-in and a few preferences in your browser so you stay signed in. The app doesn’t send email itself: it opens your own email app with the text ready, and you press Send.
6Where data is kept, and who else is involved
| Service | What for | Where |
|---|---|---|
| Google Firebase database | Your studio, students, lessons, invoices and files | European Union |
| Google Firebase sign-in | Signing in (name, email address, profile picture) | Google’s servers, under the EU standard contractual clauses |
| Cloudflare | The website, payment pages, sign-up forms and calendar links | Cloudflare’s network, under the EU standard contractual clauses |
| Mollie | iDEAL payments | Netherlands |
| Google Play | Downloading the Android app | Google’s own terms apply |
These companies act on our instructions under data processing agreements. We don’t share data with anyone else, unless the law requires it.
7How long we keep data
We keep a teacher’s data for as long as their account exists. Teachers can delete students, lessons and draft invoices themselves at any time. Sent invoices stay in the teacher’s records, because Dutch law asks businesses to keep their invoices for seven years. When an account is deleted, we delete its data within 30 days.
8Deleting your account
Teachers: in the app, go to Studio › Settings › Business and press “Delete my account”, or email clearykeys@gmail.com from the address you sign in with. We delete your studio, students, lessons, invoices, files and sign-in within 30 days and confirm by email. Download anything you need to keep for your records first.
Families: ask your teacher to remove you, or email us and we will remove your email address from every family page within 30 days.
9Your rights under the GDPR
You can ask to see, correct, download or delete your personal data, or object to how we use it. For data a teacher keeps about you, ask the teacher first; we will help them. If you’re not happy with how we handle your data, you can complain to the Autoriteit Persoonsgegevens (the Dutch Data Protection Authority).
10Security
All connections use HTTPS. Database rules let each teacher see only their own studio, and each family only their own family page. Teachers you add to your studio see only their own students and never your invoices or finances.
11Changes to this policy
If we change this policy, we update the date at the top. If a change matters for how your data is used, we tell teachers in the app first.
12Contact
Cleary Piano Lessons, trading as ClearyKeys, Amsterdam. Email clearykeys@gmail.com.