Privacy

Last updated 29 September 2026

Class Notes for Miro keeps a copy of the notes on your Miro lesson boards so that students can read, search and download them. This page says what it keeps about you, why, where, for how long, and how to have it deleted.

Who runs it

Class Notes for Miro is run by Gilbert Ramirez, who is responsible for your data. For anything about your data, write to info@hangil.app.

What it keeps

• Your Miro account: your Miro user id, your name, and your team's id and name, as Miro gives them when you sign in.
• Access to Miro: the token Miro gives when you sign in, which lets Class Notes for Miro read the boards you can read (Miro's boards:read permission). It is stored encrypted. It can't change or delete anything in Miro.
• The boards' notes: the text of the notes on the boards a teacher adds, whoever wrote them, with when they were made and changed and the Miro id of who made and changed them. Notes taken off a board are kept, marked as removed. Handwriting and pictures are not copied.
• What students add: the names, stars and tags a student gives their lesson days.
• Your settings: your language, your time zone (from your browser), and your paper size for PDFs. A teacher sees their student's city and local time, worked out from the time zone, to help plan lessons.
• How you use it: when you first and last signed in, when you last opened a page (to within a few minutes), and when each sync ran and how it went. This is counts and times, never what the notes say.
• Payments: if you subscribe, Lemon Squeezy takes the payment. Class Notes for Miro never sees your card; it keeps Lemon Squeezy's customer and subscription ids, your plan, and whether it is active. A gift code you redeem is kept with your account.
• Server logs: the web server records each request: your IP address, the page, the time and your browser's name. These are for keeping the site running and safe.

There are no ads, no analytics, and nothing is sold or shared for marketing. The pages load nothing from other sites: fonts and scripts come from Class Notes for Miro itself.

Students' notes

A teacher adds a lesson board and invites their student to it. From then on, the notes on that board are copied, including ones the student wrote, and both of them can read them here. If you are a student and want your notes removed, ask your teacher to remove the board, or write to the address above.

Why

Your account, your token, the notes and your settings are what the service you signed up for needs in order to work (in the terms of the EU and UK GDPR: to perform a contract with you). The usage times and server logs are kept in the legitimate interest of keeping the service working, safe, and able to answer questions like “why didn't my sync run?”. Subscription records are kept so that you get what you paid for.

Where it is kept

Everything is kept on one server, a virtual private server at Kamatera in the USA. Each night an encrypted copy of the database is put in Google Cloud Storage (us-east1, in the USA) in case the server is lost. The copy is encrypted before it leaves the server, with a key that only the owner holds, so Google cannot read it. Miro, where the notes come from, keeps them under its own privacy policy.

These companies process data for Class Notes for Miro:

• Miro: signing in, and the boards themselves.
• Kamatera: hosting the server.
• Google Cloud: storing the encrypted nightly copies.
• Lemon Squeezy: taking payments, as the seller of record.

How long

• Your account and settings are kept while you use Class Notes for Miro, and deleted when you ask.
• A board's notes are kept while the board is in use. When a teacher removes a board, or their subscription ends, the student has 30 days to read and download the notes; then the board and its notes are deleted.
• The nightly copies are deleted after 35 days, and the one kept for each month after 400 days, so deleted data is gone from them by then.
• Server logs are kept for 30 days.

Cookies

Class Notes for Miro uses only its own cookies, and only ones it needs or that remember a choice you made. None of them track you.

• session: keeps you signed in, for 30 days.
• oauth_state: protects a sign-in with Miro while it is happening, for 10 minutes.
• lang, sort, who: the language, the order of your boards, and whose notes to show, as you chose them, for a year.

Your browser also remembers your light or dark theme, and never sends it.

Your rights

You can ask for a copy of what Class Notes for Miro keeps about you, to have it corrected, or to have it deleted. You can download a board's notes yourself at any time, as a PDF or a web page. You can also object to how your data is used. Write to info@hangil.app; you will get an answer within 30 days. You can also stop Class Notes for Miro reading your boards by removing the app in your Miro profile settings.

If you are in the EU or UK and aren't happy with the answer, you can complain to your data protection authority.

Changes

If this policy changes, the new one will be here with a new date. If a change matters, signed-in users will be told on the site.