Minimum age: Under-18 permitted with permission from a parent, guardian OR TEACHER. No account needed to query.
If you are under age 18 you may use Wolfram|Alpha only if you have permission from a parent, legal guardian, or teacher. By using the service, you are telling us either that you are over the age of 18 and legally able to form contracts or that an adult with authority to act on your behalf has agreed to these terms.
Source: https://www.wolframalpha.com/termsofuse
The cleanest consent mechanic found anywhere in this audit, and the only vendor that names a TEACHER as a valid consenting adult, which fits a taught course exactly. The minor remains the user.
Minimum age: Under-13s permitted as restricted Child Users, in every region.
Duolingo treats Child Users (meaning users under the age of 13 in the United States or another age of digital consent in their country) differently... Child Users are permitted to create a Duolingo account, but instead of using an email address, we ask them to register using a username that is not tied to their real name.
Source: https://www.duolingo.com/privacy
Duolingo sidesteps consent by collecting no personal data. Its Terms have no age clause at all; the floor lives only in the incorporated Privacy Policy. Max is a paid subscription a minor cannot contract for, so a parent must purchase.
Minimum age: 13, or the local consent age; under-13s permitted via parent or school.
Any use of AI-Enabled Features by persons under age 18 must be supervised by an authorized adult User (their Parent, teacher or other School Personnel). Each account held by a Student or minor with access to AI-Enabled Features must be associated with an account held by an authorized teacher or other School Personnel or by a Parent.
Source: https://www.khanacademy.org/about/docs/khan-academy-terms-of-service
Not a checkbox: the student's account must be LINKED to a parent or teacher account, and use must be supervised. A self-serve 13-year-old cannot lawfully get Khanmigo standalone.
Minimum age: 13 per the Terms. Its own privacy policy says 18, so the two documents disagree.
You must be thirteen (13) years of age or older to access or use the Service. If you are under the age of 13, you must have the explicit permission of your parent or guardian to use the Service and must use an Account established by your parent or guardian.
Source: https://elicit.com/operations/terms
The privacy policy's 18 carries an express guardian-consent branch, so it stays curable, but a vendor contradicting itself is worth watching. Note /terms and /terms-of-service both 404; the real document is at /operations/terms.
Minimum age: 13 plus local uplift. India: a contract-capable parent must agree on the child's behalf.
You must be at least 13 years old (or of the required minimum age by the laws of the state or country that you reside) and have obtained parental or guardian consent if further required by the laws of the country that you reside in order to use Brainly Services.
Source: https://brainly.com/pages/terms_of_use
The only vendor in the whole audit with an explicit India section, which makes the parent the contracting party.
Minimum age: 13.
Vendor terms set a 13 floor.
Source: https://photomath.com/en/termsofuse
Cleared in the first audit round.
Minimum age: 13.
Vendor terms set a 13 floor.
Source: https://consensus.app/home/terms-of-service/
Cleared in the first audit round.
Minimum age: 13.
Vendor terms set a 13 floor.
Source: https://www.scholarcy.com/terms-and-conditions/
Cleared in the first audit round.
Minimum age: Age of majority (18), with an absolute floor of 16.
You must have attained the age of majority and have the ability to provide consent to data processing under the laws in your country, state, or province in order to use the Learneo Services. The Learneo Services are not intended to be accessed or utilized by children under 16 years of age under any circumstances.
Source: https://quillbot.com/learneo-terms
"Under any circumstances" forecloses parental consent. The bar is NOT in quillbot.com/terms; it lives in the incorporated Learneo terms, so reading the obvious page would miss it. Separately, it markets an AI Humanizer and an AI Detector, and terminates students caught cheating.
Minimum age: 18 flat, and it binds on USE, not on registration.
By using the Services and their features, You represent and warrant that: (i) You are 18 years or older.
Source: https://allenai.org/terms
A free, login-less academic search site that carries 18+ because it has no terms of its own; the floor arrives from its parent, AI2. Needing no account does not rescue it, because the bar is on use.
Minimum age: 18 flat, binds on use.
The Site is intended for users who are at least 18 years old. Persons under the age of 18 are not permitted to use or register for the Site.
Source: https://gptzero.me/terms-of-use.html
Two independent bars: flat 18, and a registration representation that you are not a minor.
Minimum age: 18.
Our Services are not intended for use by children under the age of 18. We do not knowingly collect personally identifiable information from Children under 18.
Source: https://deepware.ai/privacy-policy/
The Terms contain zero age words; the only floor is in the privacy policy, which the scan button incorporates.
Minimum age: 18 flat, with no consent mechanic anywhere in the document.
You must be at least 18 years old to use any of the Services.
Source: https://www.bemyeyes.com/terms-of-service/
Would warrant exclusion even at 13: it connects a child to an unvetted volunteer stranger through their live phone camera, with no teacher in the loop. Calls may be licensed to third parties. "Be My AI" is defined inside the same Services, so it is not an escape hatch.
Minimum age: None. No account, and inference runs in the browser.
Trash AI is open source and free to use however you see fit. You may classify images and download the data.
Source: https://www.trashai.org/
The cleanest tool in the entire audit. Images need not leave the device.
Minimum age: None. Installed GPL-3.0 desktop software, no account.
Orange is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License.
Source: https://orangedatamining.com/license/
No signup or login exists. From the University of Ljubljana.
Minimum age: None stated; no account needed to identify plants.
Using Pl@ntNet identification service and consulting data do not require creation of a user account, but this action is necessary to participate to the project's enrichment.
Source: https://identify.plantnet.org/en/terms_of_use
Keep students on the identify-only path: contributions are published CC-BY-SA with GPS coordinates and the contributor's name, and other users can email contributors directly.
Minimum age: 13 to make an account, exactly our floor, so zero margin. The EU/UK uplift could not be verified because the site is Cloudflare-walled.
Users must be at least 13 years old to make an account.
Source: https://help.inaturalist.org/
Its own guidance warns observations are "public records of where someone was at a certain time and place", so a student posting from home publishes a timestamped location trail. Use obscured geoprivacy, and prefer Seek for 13-15s.
Minimum age: None for lookup. Account: 13 plus local uplift. Pro: 18, or 13-17 with parental permission.
In order to sign up for a what3words account, you must be at least 13 years of age, or any greater age as is required by applicable laws in your country.
Source: https://what3words.com/terms
Basic lookup is ungated. "Saved Locations" would store a minor's home or school address.
Minimum age: Age of majority, expressly cured by parental agreement.
By creating a Microsoft account or using the Services, you accept and agree to be bound by these Terms and represent that you have either reached the age of "majority" where you live or your parent or legal guardian agrees to be bound by these Terms on your behalf.
Source: https://www.microsoft.com/en-us/servicesagreement
Seeing AI appears verbatim in the Microsoft Services Agreement's product list. It binds on use, with or without an account.
Minimum age: Package: none (Apache-2.0). Unity Editor: the local consent age. Publishing or Asset Store: 18, uncured.
You must be at least the age to consent to processing of your personal data in your country of residence (e.g., 13 in the US, 16 in the EU). ... You must be at least 18 years old to make Purchases or submit User Content to Unity.
Source: https://unity.com/legal/terms-of-service
Local builds are fine. Publishing to the Asset Store or forums trips an 18 bar with no guardian workaround.
Minimum age: 18 plus express capacity to contract.
accessing or using the Site, and/or using a Service, (i) you agree to these Terms and (ii) you represent that you are at least 18 years old and have the right, authority and capacity to enter into these Terms.
Source: https://edgeimpulse.com/legal/terms-of-service
Binds on accessing the site, not merely on signup.
Minimum age: 18 flat.
The Services are available only to individuals who have the capacity to form legally binding contracts under the law applicable to these Terms of Service. Furthermore, our services are not available to minors (under 18 years of age).
Source: https://blog.codepen.io/legal/terms-of-service/
Its plain-English column says "have your legal guardian sign up for you", which makes the GUARDIAN the account holder, so the student is not a permitted user and consent cures nothing. Note codepen.io/legal returns HTTP 200 while serving a user profile.
Minimum age: "An adult". The only carve-out is written for under-13s.
4. Minimum Age - You must be an adult to use the Service. If you are younger than 13 we will allow you to use the Service if you first provide us with your parent or guardian's written consent.
Source: https://replit.com/terms-of-service
A drafting gap that lands exactly on this cohort: a 13-17 year old is neither "an adult" nor "younger than 13", so is not clearly permitted. No education product exists to escape to. Separately, public Apps are auto-MIT-licensed and feed LLM training, which a 13-year-old cannot validly grant.
Minimum age: 18, or the age of majority.
You must be 18 years of age, or the age of majority in your province, territory or country, to use the Services or Apps. Individuals under the age of 18 ... may utilize the Services and Apps only with the involvement and consent of a parent or legal guardian, under such person's account.
Source: https://speechify.com/terms/
The minor must operate under the PARENT'S account, so the student is not a permitted account holder. Its own privacy policy contradicts this with a 13-plus-local-uplift model.
Minimum age: None stated in any region. Verified absence, not a failed fetch.
To protect student and children's privacy, we comply with requirements of FERPA, COPPA and New York Ed. Law 2-D in the United States and GDPR in Europe... We don't collect any personally identifiable information.
Source: https://www.naturalreaders.com/media/privacy2.pdf
Explicitly serves school students and runs a dedicated education product. The real licence is a PDF download; /terms.html 404s.
Minimum age: Age of majority, expressly cured by parental consent, so it PASSES on age.
IF YOU ARE UNDER THE LEGAL AGE OF MAJORITY (A "MINOR") ... YOUR PARENT OR LEGAL GUARDIAN MUST READ AND CONSENT TO THE ROBLOX TERMS.
Source: https://en.help.roblox.com/hc/en-us/articles/115004647846-Roblox-Terms-of-Use
Excluded on safety, not age. Roblox gates chat for under-13s, so at exactly 13 a student AGES INTO Party, Direct and Voice chat with strangers by default. Age verification can require facial geometry. May return if used as local Studio only, with no publishing, chat, or logged-in session.
Minimum age: 13 stated, but the name does not resolve to one product.
ScholarAI is for users aged 13 and over.
Source: https://scholarai.io/privacy
The vendor publishes no Terms of Service at all, and the 13 rests on a privacy policy rewritten two days before this audit. If the syllabus meant the ChatGPT plugin, OpenAI's terms govern instead.
Minimum age: Not applicable; no consumer product exists.
Intel's real-time deepfake detection ... runs on a server and interfaces through a web-based platform.
Source: https://newsroom.intel.com/artificial-intelligence/intel-introduces-real-time-deepfake-detector
Intel Labs research with B2B framing. No signup, no trial, no terms; nothing a student can use.