Privacy
Last updated 9 October 2026
theoremEd is a math tutor. This explains everything it does with your information, in plain terms.
What theoremEd reads
Each time you ask theoremEd something (pressing Look at screen, typing a question, asking for a hint, or answering a quiz question), it takes one picture of what you are working on, so it can see the problem with you. That is the only time it reads anything.
- In Chrome, the picture is of the tab you are looking at, and only once you have allowed theoremEd to read your tabs. Until then, typed questions are sent without a picture.
- On the web (theoremed.com/app), it reads only the photo or screenshot you choose to send, and what you type. Your browser keeps only a few small things for the web app to work: see Cookies and storage.
- On the Mac, it is the window you are working in, once macOS has given theoremEd Screen Recording permission. You can change this in the … menu, under More → What I can see: your whole screen instead, or nothing at all, in which case the only picture it ever takes is the box you drag with Snip the problem.
It does not read other tabs or windows. It does not read anything between your questions. It does not run any code inside the pages you visit, and it does not watch what you browse.
Where that picture goes
The picture is sent to theoremEd's server, which passes it to Anthropic's Claude API to produce the tutoring reply, and sends the reply back to you.
theoremEd does not store your screenshots. Anthropic's handling of API requests is covered by their privacy policy at anthropic.com/legal/privacy.
The two most recent pictures stay in the conversation while you work, so follow-up questions make sense. Older ones are replaced with a note. Closing the panel or pressing New problem ends the conversation.
What is stored
On your computer: your access code, whether you have seen theoremEd's one-time setup prompts, and a study record. For each session that record holds the topic, the problems you worked on, where you got stuck, and what you solved on your own. It is what lets theoremEd quiz you on your own work, make practice sheets and a progress report, and skip re-teaching what you already know. It stays on your computer, you can see it in the progress report, and you can delete it at any time: in Chrome, Delete my history on the progress report; on the Mac, Forget what I've worked on in the … menu.
Sent with a request, never kept: to write that record, theoremEd sends the text of the conversation (never the pictures) to its server at the end of a session. To build a quiz or a practice sheet it sends a short summary of the record, and while tutoring it sends the names of things you have already solved so they are not taught again. All of it passes through to Anthropic's API the same way your question does, and none of it is stored on theoremEd's server.
On theoremEd's server: a count of how many questions each access code has asked, and what they cost, so usage limits can be enforced. This is not linked to a name, an email address, or anything that identifies you.
To stop one connection from using up the free questions meant for everyone, free questions are also counted per internet connection. The server keeps only a scrambled, one-way version of your connection's address (it cannot be turned back into the address), and it is deleted after two days.
If you share an invite link, the server keeps which code invited which, so both of you get the bonus questions once. Invite links carry a scrambled version of your code, never the code itself.
On this website and in the apps: a daily total of visits to a few pages (home, download, parents), of clicks on the install buttons and the Ask a parent button, and of how many free students ran out of messages that day. They are plain numbers per day, with no cookie and nothing about who visited or clicked.
Class links: a teacher can make a link for their class on theoremed.com/class. Its random code is made in the teacher's browser, and the class name they type stays there. The server only keeps a daily total of how many times each class link was opened, with no cookie and nothing about who opened it.
Parents who buy a plan: sign in with an account handled by Clerk (your email, and Google if you choose it), so you can see your plan and your code later. theoremEd's server keeps the plan you chose, whether it is active, when it started, and how many questions it has used this month. Free users and students have no account.
Payments
Payments are handled by Stripe. Your card details go straight to Stripe; theoremEd never sees or stores them. theoremEd only learns that a plan was paid for, renewed or canceled.
Cookies and storage
theoremEd uses no advertising cookies, no analytics or tracking cookies, and nothing from any ad network. The visit counts above are kept without cookies. What is stored is only what the product needs to work, which is why there is no cookie banner: there is nothing optional to switch off.
- Sign-in cookies (parents only): when a parent signs in on My account or the plan checkout, Clerk sets cookies that keep them signed in. Nobody else gets them.
- Web app (theoremed.com/app): your browser's local storage keeps your free code (so your question count carries over), a paid code if you entered one, a friend's invite link until it is used, and when you last saw the share tip.
- Class links (theoremed.com/class): the teacher's browser keeps the class links it made and their names, so the same link shows next time.
- Chrome extension and Mac app: your code, settings and study record, stored on your own computer, as described above.
- iPhone app: your code, settings, homework planner and study record on your phone. The study record (topics, where you got stuck, quiz results, which days you studied) is also backed up on our server under your code, so entering the same code on a new phone brings it back. It is tied to the code, not to a name or email. Clear study record in the app's Progress & settings deletes both.
Clearing your browser's site data removes the web app's storage; you will get a fresh free code.
Who else handles data
Only the services that run theoremEd, each for one job:
- Anthropic: writes the tutoring replies from your question and picture.
- Cloudflare: hosts the website and the server (it handles the connection, like any web host).
- Clerk: sign-in for parents who buy a plan.
- Stripe: payments.
How long it is kept
- Screenshots and photos: not kept at all.
- Scrambled connection addresses: two days.
- Daily question counts per code: up to four months, then deleted automatically.
- iPhone study record backup: until you clear it in the app, or email us to delete it.
- Plan records for parents: while the plan or account exists. Email us and we will delete them.
Your choices
- Delete your study record at any time: on your computer (see above), or in the iPhone app with Clear study record, which also deletes the backup.
- Cancel a plan any time from My account.
- Email hello@theoremed.com to ask what is stored about your code or account, or to have it deleted. We reply ourselves.
What theoremEd never does
- Sell your information, or share it with anyone beyond the services listed above
- Show advertising
- Track you across websites
- Read your browsing history
- Ask a student for a name, email, or any account
Students under 13
theoremEd does not knowingly collect personal information from anyone, including children under 13. Students have no accounts and are asked for no personal details. The only things tied to a student's use are a random code and the scrambled connection address used to run the free limits. If a photo of homework happens to show a name, it is used for that one reply and not kept. A parent can email us to have a code's records deleted.
Permissions, and why
- activeTab — to see the one tab you asked about, when you ask
- storage — to keep your access code, settings and study record on your own computer
- sidePanel — theoremEd's interface is a side panel
- access to websites — asked for during setup or the first time you press Look at screen, and used only to take the picture that goes with a question you ask. Homework lives on sites that cannot be listed in advance, so the permission covers any site; it is used only for the tab you are on, at the moment you ask.
You can withdraw it at any time: right-click the theoremEd icon, choose Manage extension, and change Site access.
Changes
If this policy changes, the date above changes with it.