Privacy at Minerva Learn

Minerva Learn keeps what you practise so that tomorrow can start where today stopped. This page says exactly what that means: what we keep, what we never keep, and how to take it all back.

What we keep

When you use Minerva Learn from ChatGPT or from the practice player, we keep only what you ask to be kept:

• Your program — the skills you told us you'd love to learn, word for word, and the program made from them: goals, stages, the sessions of the weeks ahead, the moments you are preparing for, and ideas for what's next, with each session's practice.
• Your lines — the one sentence you choose to keep after a practice, word for word, marked as your own words or as the teacher's summary.
• Your practice record — attempts, how long you practised if you said so, answers you gave, numbers you entered, taps you made along to a beat, cards you flipped, your place in a lesson.
• Your wins — each practice you finished, by name and date, with your own photo and your own line when you kept them.
• Pictures, clips and recordings you chose to keep — as small previews and numbers, never as the original file (see below).
• Your rhythm — the days, time and minutes you said you'd like to practise, what you told us about your week (an evening that is free, the days you are at the pool, a dinner you are cooking for), your time zone, and whether you set a daily task in ChatGPT.
• Your sign-in — the email you sign in with, kept apart from your learning. Each sign-in code we email you is stored only as a one-way hash, works once and expires after 15 minutes. To stop abuse we note the network address a sign-in or a new account came from and keep those notes for a day.

Nothing is saved without your yes, or without you pressing a save button yourself.

How your program is made

Your program and each session's practice are composed on our server by an AI model: Anthropic's Claude, reached through OpenRouter. To do that, the model is sent what the program needs and nothing more — the skills you named, what you said about your time, place and things, what you asked to change, the program so far, and the lines, answers, picture captions and practice results you chose to keep. It is never sent your email, your name, your pictures, clips or recordings, or anything that identifies you. We ask for no data retention: the request is used to answer and is not kept or used for training by the model's providers. What comes back is checked by our server and kept as your program.

The pictures in your lessons — the one that opens a practice, and the ones that show what a good result looks like — are made for that lesson by an image model: Google's Gemini, reached through OpenRouter. It is sent only a description of the picture's subject, written by our own model from the lesson itself (a bowl, a jug, a pair of hands), and the house style it is drawn in. It is never sent your pictures, clips or recordings, your name, your email or your own words. Each picture is kept with your lesson and can be deleted with it.

Pictures, clips and recordings

You can share a photo, a short video, an audio recording or a drawing to learn from: the result you want to make, a page to learn from, or how yours came out. We are asked before anything is kept.

• The original is deleted. Each file is read on our own server and deleted as soon as it has been read. A temporary copy never outlives that moment, and the temporary folder is emptied every time the server starts.
• What stays. For a photo, one smaller copy with every piece of hidden information removed, including location. For a video of up to a minute, a handful of still frames. For a recording of up to five minutes, measurements of the music in it — notes, steadiness, tempo, pauses — and a small picture of the pitch line; never the sound itself. For a drawing made in the player, the drawing.
• No face or voice reading. We never use a picture or a recording to work out who someone is, how old they are, how they feel or anything about their health — not in our code, not in our descriptions, not in our instructions to the teacher.
• Other people. Please share pictures of other people only if they're happy for you to. The teacher will ask.
• Limits. Up to 300 kept items per person.

The microphone

Some practices offer a live pitch reading: you tap, the player listens for up to twenty seconds, and the reading is worked out inside your browser. No sound from the microphone is saved, uploaded or sent to us. If you'd rather not, record yourself on your phone and share the file, or simply describe how it went.

There is no camera in the practice player. It never turns one on.

What we never do

• Sell your data, show you ads, or share your learning with anyone else.
• Train anything on what you keep.
• Read another person's learning, or let anyone read yours.
• Grade you, rank you or count the days you were away.
• Keep notes about your body, pain, mood or health. If something hurts, practice stops and nothing about it is recorded.
• Send your pictures, clips or recordings anywhere. They are read on our own server, and we pass them to no model and no other service.

ChatGPT

When you use Minerva Learn inside ChatGPT, your conversation itself belongs to ChatGPT and is covered by OpenAI's own privacy policy. Minerva Learn receives only what its tools are given — a short note of what each request is for, the details of the practice, and the files you chose to share — and keeps only what is described above. Minerva Learn sends no reminders itself; the daily task you can set up in ChatGPT is ChatGPT's own scheduled task, and it lives with ChatGPT.

Where it lives

Your learning is stored on Minerva Learn's own server, separate from every other Minerva product: its own accounts, its own data, its own storage. The server runs on Heroku (Salesforce) in the European Union; your records and the pictures made for your lessons are kept in a Postgres database run by Neon in London, United Kingdom. Kept previews of your pictures and rendered practice materials stay on the server's own disk. Sign-in emails are delivered by Resend; they carry only the code. Programs and practices are composed through OpenRouter by Anthropic's model, and lesson pictures are made through OpenRouter by Google's image model, as described above.

How long, and taking it back

Everything you keep stays until you delete it. You can:

• See it. Ask "show me everything I've kept" and the teacher reads back your saved learning, including the list of kept pictures and recordings.
• Delete it. Ask to delete your program, a lesson, an attempt, or kept pictures and recordings. The teacher names exactly what would go. When that is exactly what you asked for, it is deleted right there in the chat; when it would take more with it, the teacher asks you first. Deleting a picture removes every preview made from it. Nothing is deleted unless you ask.

Contact

Minerva Learn is operated by Minerva Nova Limited, a company registered in England and Wales (company no. 17082360), 3rd Floor, 86-90 Paul Street, London EC2A 4NE. Questions, or a request about your data: privacy@minervanova.ai.

Version 2.1 · Effective 13 November 2026 · Terms of Service