Privacy in short · version 2026-10-27
Your privacy in LUNA
Here is what LUNA keeps about you and what happens to it. It takes one minute to read.
What LUNA keeps
Your name, your email, your class, the files you add, your answers and your scores.
Why
To make quizzes and study plans for you and to show how you are doing. Never for ads, and we never sell it.
Who can see it
You. Your teacher sees the work and scores for their class. Your parent sees your progress if you are connected. Other students only see what you share with them.
LUNA's AI helpers
To make quizzes and check written answers, LUNA sends your school work to AI companies (OpenAI, Anthropic, Mathpix). We do not send your name or email. OpenAI and Anthropic do not use it to train their AI.
AI can be wrong
When LUNA's AI marks an answer or gives feedback, it is a suggestion. It can be wrong, and your teacher decides. Think a mark is wrong? Press “Ask my teacher to review this mark”.
Counting time
LUNA counts how long you spend in each part of the app each day, to make it better. It never saves what you type for this.
You are in charge
You or your parent can download everything or delete your account in Account settings. Questions? Ask your teacher or parent.
Stay safe
Keep your password secret. Do not upload other people’s private information.
For parents and guardians
LUNA is a study app. Here is, in short, what happens to your child's data. The full Privacy Policy has the details.
What we collect
- Account: name, email, role, birth date or age, class.
- School work: files your child or the teacher adds, quizzes and plans LUNA makes, answers, scores and progress per topic and skill.
- Marks and short feedback suggested by AI for written answers; reviews a teacher made.
- Messages between your child and their teachers inside LUNA.
- How long each part of LUNA is used per day, and how much AI each account used. Never what your child types, for these counts.
- One cookie that keeps your child logged in. No advertising or tracking cookies.
Who sees it
- Your child.
- Teachers your child is connected to: the work and scores for their class.
- You, if your account is connected to your child: progress, and you can download or delete the data.
- Nobody else, unless your child shares something. Children cannot make open connections with people they do not know, and cannot sell anything in the marketplace.
AI
- To make study material and suggest marks, the text, pictures and questions a task needs are sent to OpenAI, Anthropic and, for formulas, Mathpix. Names and email addresses are not sent; emails and phone numbers typed in answers are removed first.
- Under their business terms OpenAI and Anthropic do not use data sent through their API to train their models. We ask every provider not to keep it longer than needed.
- AI marks and feedback are suggestions. They can be wrong. The teacher decides what counts, and a student can ask the teacher to review any mark. LUNA never makes decisions about your child on its own.
Consent
- In Spain a child under 14 needs a parent's or guardian's consent (under 13 in the UK and the US). You give it by email when your child signs up, on the school's paper form, or inside LUNA from your parent account.
- You can withdraw it at any time: delete your child's account from “My children”, or tell the teacher or us. The data is then erased.
Your rights
- See, download, correct and delete your child's data, and object to how it is used.
- Complain to the data protection authority: the AEPD in Spain (aepd.es), the ICO in the UK (ico.org.uk); in the US, the FTC.
Who handles the data for us
| Company | What for | Where |
|---|---|---|
| Supabase | Stores accounts, files, answers and scores (the database) | Cloud database |
| Vercel | Runs the LUNA website | Servers in London, UK; US company |
| OpenAI | AI that makes quizzes, plans and summaries, checks written answers and answers questions in chat | United States |
| Anthropic | AI that reads scanned pages and pictures in uploaded files | United States |
| Mathpix | Reads maths formulas in pictures | United States |
| Email provider | Sends emails (confirm your email, reset a password, requests) | Depends on the provider |
Transfers to the United States rely on the EU–US Data Privacy Framework or Standard Contractual Clauses. We do not sell personal data.
What we keep and for how long
| What | How long |
|---|---|
| Account: name, email, role, birth date or age, class | While the account exists. Deleted 30 days after you ask (logging in during those 30 days cancels it). |
| Files you add and what LUNA makes from them | While the account exists, unless you delete them first. |
| Answers, scores and progress per topic and skill | While the account exists. |
| Marks a teacher reviewed | While the account exists. |
| Messages between students, parents and teachers | 3 months, then deleted automatically. |
| Photos of working on paper | Sent to the AI checker for that question only, not kept. |
| Time spent in each part of LUNA, per day (never what you type; not recorded for children under 14) | 13 months, then deleted automatically. |
| How much AI each account used (for the monthly credits) | While the account exists. |
| A child's request for a parent's consent | 48 hours at most. |
| Accounts nobody uses | After 24 months without logging in we email; 30 days later deletion starts. |
All the details: Privacy Policy · AI notice · Consent form for parents