# Synthesis Tutor: reviews and analysis > Maths tutor for children aged 5 to 11 that corrects the mistake as it happens and adapts the next exercise. - Canonical: https://serchai.com/en/reviews/synthesis-tutor/ - Site: Serchai (https://serchai.com) — AI tools comparator - Language: en - Updated: 2026-08-05 --- ## Verdict Synthesis Tutor covers the elementary maths syllabus with a tutor that steps in when the child gets something wrong, adapts what comes next and reads aloud for under-sevens. It works and it is liked, with a 4.6 average over almost ten thousand App Store ratings, but it runs out of content: the most repeated complaint is that an advanced child exhausts what is there in weeks. And no independent press has assessed it, only affiliate-linked reviews. **Best for:** Families with several primary-age children who want guided on-screen maths practice without arranging private lessons. **Rating:** 3.4/5 ## Pros - One subscription covers up to seven children, which is rare at this price - It corrects at the moment of the mistake and adapts the next exercise to the level - Automatic read-aloud for under-sevens and on-screen manipulatives ## Cons - It falls short for an advanced child: several sources agree the content runs out - Elementary maths only, ages 5 to 11, and nothing above that - There is no press or independent evaluation: what you find are affiliate-linked reviews ## Key facts - Price: From 29 USD · free trial available - Free trial: Yes - Platforms: Web, iOS - Categories: [Learning](https://serchai.com/en/best-ai/learning/) - Official website: https://www.synthesis.com/tutor ## What the internet says (agentic sweep) Synthesis Tutor has the segment's best usage signal, with a 4.64 average over 9,732 App Store ratings and a new version on 14 July 2026, and its worst editorial signal, because not one piece of independent press exists about it: what you find are affiliate-linked reviews. The complaint that recurs across separate sources is that the content runs out, especially with a child working ahead of their year. - Sweep date: 2026-08-05 - Derived score: 3.4/5 ### Axes - Results: 3.6/5 - Control: 3.3/5 - Real price: 3.5/5 - Integration: 2.8/5 - Support: 3.7/5 ### Recurring themes in favor - The visible subscription covers up to seven children for $29 a month or $119 a year, and the Apple listing confirms those same two figures as in-app purchases (strong theme) - A 4.64 rating over 9,732 App Store reviews, updated on 14 July 2026 and with twenty-four versions since December 2023 (strong theme) - Its own authored content rather than material generated on the fly: an enumerated elementary syllabus, on-screen manipulatives, automatic read-aloud for under-sevens and speech recognition in beta (present theme) ### Recurring themes against - It runs out of content, and sources that do not copy each other say so: a hands-on review with two children speaks of three months before only the games were left, and store reviews ask for more units (strong theme) - There is not one independent press or education-media assessment: the ecosystem writing about it is affiliate-monetised reviews, and the only critique with no commercial incentive dates from June 2023 and covers an old demo (strong theme) - Its own material describes the help as step-by-step guidance when the student makes a mistake, not as Socratic hints while solving, so the discipline of withholding the answer is weaker than Khanmigo's (present theme) - It covers elementary maths for ages 5 to 11 and stops there: no other subjects and no higher years (present theme) ### Sweep sources - [Official pricing] https://www.synthesis.com/tutor — Tabla de precios visible: «Monthly | UP TO 7 KIDS | $29 /month» y «Annual | UP TO 7 KIDS | $119 /year», moneda USD declarada en el código de la página, con «Start your 7-day free trial» y «No credit card necessary» - [App stores] https://apps.apple.com/us/app/synthesis-math-tutor-for-kids/id6448335635 — Ficha de Apple consultada el 5 de agosto de 2026: 4,64 de media sobre 9.732 valoraciones, versión 3.9.1 del 14 de julio de 2026, primera publicación el 7 de diciembre de 2023 - [Review sites] https://www.unite.ai/synthesis-tutor-review/ — Reseña con prueba práctica del 27 de octubre de 2025, actualizada el 30 de marzo de 2026: destaca la guía paso a paso y critica que apenas hay contenido avanzado más allá del quinto curso - [Review sites] https://www.aitoolsforkids.com/blog/synthesis-tutor-review-ai-math-tutor-for-kids — Prueba del 20 de junio de 2026 con dos hijos de 8 y 5 años: elogia la adaptación al nivel y describe respuestas correctas marcadas como incorrectas y el contenido agotado en tres meses - [Communities] https://notes.andymatuschak.org/zN24T3P8FH7F73F6gBy4XCM — Análisis del 14 de junio de 2023 sin incentivo comercial, sobre una demostración anterior: describe una secuencia de mensajes guionizada y una voz sintética que suena condescendiente - [Communities] https://news.ycombinator.com/item?id=36246550 — Hilo de Hacker News del 8 de junio de 2023 con 106 puntos y 68 comentarios sobre la versión de entonces, con reparos al ritmo y a la falta de explicación del razonamiento > **TLDR:** Synthesis Tutor is an elementary maths tutor for children aged 5 to 11, with a subscription that covers up to seven kids and a product that clearly had work put into it: it corrects at the moment of the mistake, adapts the next exercise and reads aloud for the youngest. The complaint that separate sources agree on is that the content runs out, especially for a child working ahead of their year, and that nobody without an affiliate incentive has assessed it properly. ## What Synthesis Tutor is and how it works Synthesis Tutor covers the standard elementary maths syllabus, from counting to fractions by way of the four operations and algebraic thinking. The age range it declares is 5 to 11, and it is worth taking seriously because it marks both what the product does well and where it stops. The app does not work like a chat you ask questions of. The child enters a unit, works on screen with digital manipulatives (blocks, number lines, representations you touch and move) and the system steps in when something goes wrong. The vendor's own description of that intervention is step-by-step guidance at the point of the mistake, not a run of Socratic questions while the child thinks. That is a real difference from [Khanmigo](https://serchai.com/en/reviews/khanmigo/), which does carry the refusal to hand over answers as a house rule, and it is worth knowing before choosing between the two. What it does do, and many do not, is adapt in earnest. Difficulty moves with the child's answers, the treatment of an error changes with the kind of error, and the next session is not the same for two different children. For under-sevens, all text and answer options are read aloud automatically, and the speed of that voice is adjustable in settings. There is also speech recognition so answers can be spoken rather than typed, still in beta. This is not a text box over somebody else's model. There is an enumerated syllabus of its own, content someone wrote, games, adaptive flashcards and a dashboard so parents can see where each child stands. That is expensive to build and it shows in use. ## What it is like day to day The usage signal is the best in the segment: a 4.64 average over 9,732 ratings on Apple's app store, a new version on 14 July 2026 and two and a half solid years of continuous releases since December 2023. That is a live product with people inside it, not an abandoned demo. Accounts from people who have run it with their own children agree on the opening: it hooks, and it hooks fast, particularly between six and nine. A hands-on review from June 2026 covering two children describes the older one grasping grouping in multiplication before school got to it, and the five-year-old lasting a few minutes before frustration set in. That asymmetry recurs: the bottom of the declared range performs worse than the middle. The criticism that shows up in sources that do not copy one another is the depth of the wardrobe. A child working ahead of their year eats through what is available quickly: that same June review talks about three months before only the games were left, and store reviews include people asking for more units after finishing the content. For an annual subscription that is a serious problem, because what you buy is a year and what is there may last considerably less. The other documented criticism is narrower, and one identifiable person publishes it with affiliate links in their review: correct answers marked wrong, with a frustrated child and a parent checking that the answer was in fact right. Nobody else independently backs it, so it stands here as a single testimony rather than a pattern. What is missing also deserves saying. Not one assessment from general or education press exists about this tool. What searching turns up is reviews monetised with referral links, and the only critique with no commercial incentive we could read dates from June 2023 and examines an earlier demo, whose author described a scripted sequence of messages and a synthetic voice with a condescending tone. For a tool nearly three years old, that editorial vacuum is itself a data point. ## Pricing and plans The table a visitor sees today has two rows. Monthly sits at $29 a month and annual at $119 a year, and both cover up to seven children on the same subscription, which is what makes it competitive in a house with several. There is a seven-day free trial with no card. Apple's listing confirms those same two figures as in-app purchases, so they do not depend on what the website renders. Discount badges sit next to those figures, so read them as today's price rather than a rate carved in stone. The page also carries older pricing tables in its code that are not displayed, with noticeably higher amounts and a different allocation of children per plan. If you ever see figures that do not match these, they probably came from there. The honest arithmetic for a family runs like this: it is cheap per child if there are several, and expensive per year if the eldest exhausts the content in a few months. The seven-day trial will not surface that, because the problem does not appear until the child gets ahead. If your child is comfortable in maths, start on the monthly plan. ## Who it is for (and who it is not) It fits families with several primary-age children who want guided practice without arranging tutoring schedules, and especially households where the parents are uncomfortable explaining maths. It also fits home education as a supplement, never as the whole maths programme for a year. It is not for a child already working ahead, because it falls short. It is not for over-elevens, because there is nothing above that level. And it is not for anyone who needs alignment with a non-US curriculum, because the reference syllabus is American elementary maths. Anyone after a tutor that genuinely withholds the answer and covers more subjects and more ages should look at [Khanmigo](https://serchai.com/en/reviews/khanmigo/). Anyone unwilling to pay has [CK-12 Flexi](https://serchai.com/en/reviews/ck12-flexi/), free and with more syllabus range, though with less care for the age of whoever is using it. The segment ranking is in [the best AI tutors for learning](https://serchai.com/en/best-ai/ai-tutors-for-learning/) and the wider map is in [the best AI tools for learning](https://serchai.com/en/best-ai/learning/). ## Alternatives to Synthesis Tutor [Khanmigo](https://serchai.com/en/reviews/khanmigo/) is the unavoidable comparison: more ages, more subjects and a documented Socratic discipline, at the cost of an experience less tailored to a six-year-old. [CK-12 Flexi](https://serchai.com/en/reviews/ck12-flexi/) costs nothing and covers secondary school, with the caveat that it hands over the direct answer if you ask for it. Both sit in [alternatives to Synthesis Tutor](https://serchai.com/en/alternatives/synthesis-tutor/). ## Frequently Asked Questions ### What does it cost and how many children does it cover? From $29 a month, with an annual option at $119 a year, and one subscription covers up to seven children. There is a seven-day free trial with no card. ### Does it give the answer or make the child think? It sits in between. It steps in with step-by-step guidance when the child gets something wrong, which is more than solving the exercise for them, but it is not a Socratic tutor answering with questions while the child works. ### Up to what age is it useful? To eleven according to the vendor, and in practice less if the child is ahead. Above that level there is no content. ### Does the content really run out? It is the most repeated complaint and sources independent of each other support it, including app store ratings asking for more units. Factor it in before paying a year upfront. ### Does it work in other languages? The app is localised, Spanish included, but the syllabus it follows is US elementary maths, so it is not aligned with other national curricula. ## Alternatives - [Khanmigo](https://serchai.com/en/reviews/khanmigo/) — Khan Academy's Socratic tutor for learners and families in the United States. (4.4/5) - [CK-12 Flexi](https://serchai.com/en/reviews/ck12-flexi/) — A non-profit foundation’s tutor: genuinely free, anchored to its own library and too quick to hand over the answer. (3.7/5)