| 99math | Not stated as a minimum age for student accounts. | about 5-14 (grades K-8) | The child's own account |
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| ALEKS | McGraw Hill terms say users must be adults (generally 18+); under-18s not in college need their school, parent or guardian to accept the terms for them, and… | school-age students through college (K-12 and higher ed courses) | A parent's account |
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| AoPS Online | Under 18 may register only with a parent's or guardian's involvement and consent, or at the direction of a school. | grades 5-12 (about 10-18) | A parent's account |
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| Arcademics | Not stated in terms. | about 6-14 (grades 1-8) | No account needed |
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| Beast Academy | Under 18 may use it only if a parent or guardian has read and agreed to the terms for them. | 6-13 (levels 1-5, roughly grades 1-5) | A parent's account |
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| Bedtime Math | The terms say you must be 13 or older to use the foundation's offerings; children under 13 may use them only with adult supervision, and 13-17 year olds need… | about 3-9 | No account needed |
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| Brilliant | Under 18 must use it with a parent's supervision and consent, and a parent must accept the terms for them. | about 10-18 and adults (grade 5 to college) | A parent's account |
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| CoolMath4Kids | No terms of use page found. | about 5-12 | No account needed |
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| Desmos (and Amplify Classroom) | The terms set no age for independent use, but the privacy policy says the service is not directed to children under 13 in the US (under 16 in the UK and EU)… | about 10-18 for the calculators; grades K-12 for Amplify Classroom lessons | No account needed |
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| DoodleMaths | Child accounts must be created by a parent/guardian or a school; Discovery Education's policy says children 13 and under cannot make their own accounts. | about 4-14 (EYFS to KS3) | A parent's account |
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| DragonBox | Not stated as a minimum age. | about 4-14 (Numbers from 4; Algebra 12+ for older kids) | A parent's account |
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| DreamBox Math | An individual must be 18 or older to register an account; a parent or guardian can then add child users under 18. | about 5-14 (grades K-8) | A parent's account |
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| DREME Family Math | Not stated. | about 0-8 (focus on preschool) | No account needed |
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| dy/dan (Dan Meyer) | The site states no minimum age. | written for teachers | No account needed |
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| Dyscalculia.io | An adult (18 or the age of majority) must create the account; a child plays inside a parent's or carer's account under their supervision. | 4 to adult | A parent's account |
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| Eedi (with Eedi Tutor) | No minimum age in the terms; students join through a teacher's class code or create an account, and parents who sign a child up consent on the child's behalf. | school-age math students (UK-based); ages not stated | A school account |
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| Ei Mindspark | Under-18s may not register themselves; a parent or guardian must agree to the terms and make it available to the child. | classes 1-10 (about 6-16) | A parent's account |
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| enVision Mathematics (Savvas Realize) | School-provided; students log in with school credentials. | grades K-12 | A school account |
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| Estimation 180 | Not stated. | grades 3-8 (about 8-14) | No account needed |
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| Eureka Math | Great Minds' websites are not for users under 18. | PreK-grade 12 | A school account |
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| Eureka Math² | The digital platform is only for students and teachers authorized by their school; Great Minds' websites are not meant for anyone under 18. | PreK to Algebra I (about 4-15) | A school account |
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| Freckle | Not stated in the website terms. | about 5-18 (grades K-12; math through Algebra 2) | A school account |
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| Hit the Button (Topmarks) | Not stated in terms; the terms of service set no age limit. | about 5-11 | No account needed |
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| Illustrative Mathematics (IM Math) | Registering for an account requires being 18 or older, or using it under a parent's or guardian's supervision. | grades TK-12 (about 4-18) | No account needed |
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| IXL | IXL sells only to adults. | about 4-18 (pre-K to grade 12) | A parent's account |
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| K5 Learning | For adults only. | about 5-11 (grades K-5) | A parent's account |
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| KenKen | The terms of service give no minimum age. | about 7 and up (3x3 grids for beginners) | No account needed |
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| Kumon Math and Reading Program (with Kumon Connect) | No age rule found in a published terms page; parents enroll children at a center. | about 3 to high school | A parent's account |
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| Math Academy | Only adults (age of majority) can create accounts. | about 9-18 and adults (4th grade math up) | A parent's account |
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| Math Antics | You must be 13 or older to subscribe. | about 8-14 (grades 3-8 topics) | No account needed |
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| Math in Focus: Singapore Math | HMH's terms set no age. | grades K-8 (about 5-14) | A school account |
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| Math is Fun | Not stated: the site has no terms of use page. | about 6-18 (K-12) | No account needed |
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| Math Learning Center Apps (Math MultiApp) | Not stated in terms. | grades K-8 (about 5-14) | No account needed |
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| Math Mammoth | Not stated; there is no terms of service page. | grades K-8 | No account needed |
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| Math Playground | Not stated in terms. | about 5-12 (grades K-6) | No account needed |
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| Math Worksheets 4 Kids | The terms set no age rule. | grades K-12 (interactive worksheets K-8) | A parent's account |
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| Math-Drills | The privacy policy says the site is meant for adults, including parents and teachers, and is not directed at children under 13; it asks adults to supervise… | grades K-8 | No account needed |
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| MATHia | School-only. | grades 6-12 (about 11-18) | A school account |
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| Mathletics | Minors need permission from their school, parent or guardian. | about 5-16 (K-10) | A parent's account |
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| Mathnasium | Website terms say Mathnasium does not knowingly collect personal information from anyone under 18 without parental consent, and anyone under 18 should not… | about 5-18 (grades K-12) | A parent's account |
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| Mathspace | Terms say a learner under 18 needs permission from their school or a parent, tutor or guardian before signing up. | about 8-18 (grades 3-12) | A parent's account |
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| Mathway | Chegg's terms, which cover Mathway, say the services are for ages 13 and up; anyone between 13 and adulthood must review the terms with a parent. | about 12-18 and college | No account needed |
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| Matific | Terms bind the adult user (parent, teacher or school), who must be of legal age where they live. | about 4-14 (grades K-8) | A parent's account |
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| NRICH | No minimum age for browsing. | about 3-18 (early years to post-16) | No account needed |
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| Numberblocks apps | The privacy policy says you should be at least 16 to register an account on the website or app, and the company does not knowingly market to children under… | about 3-6 | A parent's account |
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| Open Middle | Not stated; the site has no terms of use or account sign-up that we could find. | grades K-12 (about 5-18) | No account needed |
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| Photomath | Only for people 13 or older; anyone under 13 is prohibited. | 13+ | No account needed |
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| Polypad (and Mathigon courses) | Not stated as an age. | about 5-18 (grades K-12) | No account needed |
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| Prodigy Math | Not stated as an age in the terms. | about 6-14 (grades 1-8) | The child's own account |
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| QANDA | Terms say minors may need a parent's consent to join and to pay; the privacy policy checks birth dates and asks for a parent's name and phone number for… | about 11-18 | The child's own account |
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| Rori | Rori's own pages state no age rule. | grades 3-9, plus adults relearning basics | The child's own account |
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| Singapore Math (Dimensions Math, Primary Mathematics) | The website terms say anyone who submits content must not be a minor. | about 4-14 (PreK-grade 8) | A parent's account |
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| Smartick | An adult parent or guardian buys the service and registers the children, who may be minors; the parent is responsible for everything done on the account. | 4-14 | A parent's account |
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| SolveMe Puzzles | No terms of use or age rule are posted on the puzzle site; anyone can play as a guest without an account. | about 8-14 (upper elementary through algebra), and older puzzle fans | No account needed |
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| Sparx Maths | School-only. | 11-16 (UK Key Stage 3 and GCSE) | A school account |
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| SplashLearn | Children under 13 use it through a parent account (the parent gives the child's first name and other limited details at sign-up) or through a teacher, who… | 2-11 (preschool to grade 5) | A parent's account |
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| ST Math | Students may use it only if they are at least 13, or with the consent and supervision of a parent, guardian or teacher. | about 4-14 (PreK-grade 8) | A school account |
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| Sumdog | Students need permission from a parent, guardian or teacher, who must register for them; anyone under 18 logs in only on an account a parent or teacher created. | about 5-14 (US grades K-8; UK years 1-9) | A parent's account |
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| Symbolab | Learneo's terms, which Symbolab's service terms add to, require users to be at least 13 or the minimum age to consent in their country. | about 12-18 and college | The child's own account |
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| The Math Learning Center (free math apps) | The website terms set no age limit, and the privacy statement does not address children. | about 4-11 (PreK to grade 5) | No account needed |
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| Think Academy | Parents sign up and pay; payments for any student under 18 must be made by a parent. | pre-K to grade 12 (math programs start at grade 1) | A parent's account |
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| Todo Math | Only parents may create a parent account, and adult areas behind the parental gate are for users 18 or older. | about 3-9 (PreK-grade 3) | A parent's account |
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| Which One Doesn't Belong? | No terms or age rule posted; no account needed to view the sets. | about 4-18 (sets range from preschool shapes to calculus graphs) | No account needed |
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| Wolfram|Alpha | Under 18 may use it only with permission from a parent, guardian or teacher. | about 13+ (high school and up) | No account needed |
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| WorksheetWorks | The site is for users at least 13. | about 5-14 | No account needed |
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| Zearn Math | Accounts are created by an adult: a parent, guardian, or authorized school or district employee. | grades K-8 | A school account |
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