Draft — pending legal review. This policy describes the current service. It is being reviewed and has not yet been finalized.
Privacy Policy
Last updated: November 11, 2026
What we collect
- Account info — name, email, and password (stored only as a secure hash).
- Sign in with Google — if you choose Continue with Google, Google shares your basic profile: your name, your email address and whether Google has verified it, an account ID, and a link to your profile picture. We keep only your name, your email address and that account ID, which connects your Google account to your Ntrino account; we don't keep the picture, and we never receive your Google password. Disconnecting Google under Account & security removes the account ID.
- Profile — your name, year in school, and date of birth (used to check the age requirement; we don't independently verify identity), plus optional school, major, and minor.
- Conversations — messages, questions, uploaded homework images and documents, and text extracted from those uploads.
- Usage — basic activity such as sessions and streaks, used to power progress reports.
- Sign-in and device info — when you sign in, the time, your IP address and your browser's or app's user agent (which shows, for example, that you use the Android app), kept in your sign-in history with your account so you and we can spot unfamiliar access. IP addresses are also used to limit repeated sign-in attempts; we don't use them to locate you.
- Payment — on the website, handled by Stripe: we receive a customer reference and status, never full card numbers. In the Android app, handled by Google Play: we give Google Play our ID for your account (a random code, not your name or email) so the purchase reaches the right account, and we receive from Google the plan's status and dates, the purchase token and the order number, never your payment details.
- Reports — if you report a mentor reply, a copy of that reply, the reason you chose and any note you add.
- How you found us — if you arrive from another website or from a link with campaign tags, a cookie on your device remembers where you came from (that site's name or the link's campaign and source names, and the page you arrived on) for up to 30 days. If you sign up, it is saved with your account, along with your answer to the optional question “How did you hear about us?”, and the cookie is removed. We don't set this cookie if your browser sends Global Privacy Control. If you follow a link with a creator's or club's code, or a member's invite, a cookie keeps that code for up to 30 days so it applies when you sign up; the code, or which member invited you, is then saved with your account, to give the longer trial or the invite rewards and to count what each code brings in. Separately, we count visits to our public pages as daily totals for each page and source, without cookies and without keeping your IP address or anything else that identifies you.
- Notifications — in the Android app, if you turn on study reminders: a notification token for your phone (an identifier Google's notification service issues for this app on that phone) and the days, time and time zone you chose. The token is also used to tell you when our support team replies. Turning reminders off deletes your reminder choices and the token. The token is also deleted when you sign out in the app, when you delete your account, when someone else signs in to the app on that phone, or when Google tells us it no longer works (for example, after you uninstall the app).
How we use it
To provide the mentor, personalize explanations and practice, remember progress, generate study summaries, keep accounts secure, and process billing. Progress and focus-time figures are estimates. Automated safety screening may flag conversations for staff review and show crisis resources. Screening can miss or misclassify concerns and is not an emergency service. Flagged conversations are excluded from study summaries and insights. Reports of mentor replies are reviewed by our team to improve the mentor. The Ntrino Mentor Android app shows this website's pages inside the app, so this policy covers it the same way. In the app, when you use the microphone, your speech is usually turned into text by your phone's own speech recognition service (from your phone's maker or Google), which may send the audio to that company's servers under its own privacy terms; only the text reaches us, as when you type. If the app uses our voice provider instead, the recording is sent to us and to that provider only to turn it into text, and we don't keep it.
What we don't do
We do not sell your data, and we do not show third-party advertising. Your conversations are used to operate the service for you — not traded or rented to anyone.
Service providers we share with
Providers process data needed for the features you use: AI providers receive study context to generate mentor responses and summaries, voice providers process speech inputs or outputs, Stripe handles payments on the website, Google Play handles payments in the Android app, Google's Firebase Cloud Messaging delivers the Android app's notifications (it receives the phone's notification token and the notification, which never contains what you wrote), Google confirms who you are if you sign in with it, and email providers deliver account messages and reports. When you share a link, that website receives the request for its page; when the mentor searches the web, a web search provider receives the short search the mentor writes about the topic; and a site-filtering service receives the names of linked and found sites to check them for adult or harmful content. Only what each one needs is sent. Their processing is also subject to their applicable terms and privacy policies.
Age requirement
Ntrino Mentor is for adults 18 and older, and we don't knowingly collect personal information from anyone under 18. The date of birth entered at sign-up is used to check this and is not independently verified. If we learn that an account belongs to someone under 18, we close it and delete its information. If you held a type of account we no longer offer, you can still view it, cancel billing, and ask us to delete its information at any time.
Security
Ntrino Mentor uses hashed passwords, account access controls, and encryption for uploaded files and sensitive settings. HTTPS protects data in transit when the service is deployed with HTTPS. These measures do not mean that all stored learning data is encrypted or that every security risk can be prevented.
Retention
Access to uploaded files expires after seven days, and scheduled cleanup removes expired file data. Text extracted from files can remain in conversations after the original file expires. Conversations, learning records, and account data are retained while needed to provide the service; they are not automatically erased after seven days. You can delete a chat yourself from its menu: its messages and the files uploaded in it are removed right away, notes you saved from it stay until you delete them, and learning records built from it, such as skill progress, are kept. A chat our team is reviewing for safety can't be deleted until the review ends, and the short excerpt that review keeps stays with it for up to 90 days after it is resolved. A reply you report and your note are kept even if you delete the chat, so our team can review them; only our team sees them. They are kept until the report is resolved and then for up to 90 days, or until you delete your account, if that comes first. You can delete your account yourself under Account → Delete account, in the app or on the website (ntrinomentor.ai/delete-account explains how, including how to ask by email if you can't sign in). Your profile and sign-in details, chats, notes, uploads, practice and progress, sign-in history, support requests, reported replies, study reminders and notification tokens, our record of your Google Play purchases, our record of the billing emails we sent you, and your invite link and the invites you made are deleted right away; a website plan is canceled and a Google Play plan is set not to renew. We email you a confirmation. What is kept: Stripe and Google Play keep the payment records the law requires them to keep; totals that identify no one are kept; emails you sent us stay in our mailbox; and copies in our database backups are deleted when those backups expire, within 90 days. If a chat is under a safety review, the account can be deleted once the review ends.
Your choices
You can access or update your information from your account, delete your account there yourself, and email us to request a copy of your data or its deletion.
Contact
Ntrino Mentor is operated by Ntrino LLC. Privacy questions? Email privacy@ntrino.ai.