Direct answer
What is Synthesis?
Synthesis provides an adaptive, interactive math tutor for children ages 5 to 11, combining micro-assessments, multisensory manipulatives, and curriculum coverage from counting to algebraic thinking.
Originating from an experimental school co-founded by Josh Dahn and Elon Musk at SpaceX, Synthesis is an educational platform designed to build math foundations and problem-solving skills in elementary students. Rather than relying entirely on uncurated large language model chats, Synthesis Tutor blends algorithmic adaptation with structured curriculum designed by educators and neuroscientists. The system covers standard kindergarten through fifth-grade (K-5) math topics, including counting and cardinality, addition, subtraction, multiplication, division, fractions, and introductory algebraic thinking. Learning is driven through interactive, game-like lessons and continuous micro-assessments that evaluate student comprehension in real time rather than through traditional isolated exams. Synthesis Tutor includes accommodations for emerging readers, such as automated read-aloud functionality for users under age seven and adjustable voice speeds. It also provides multi-sensory visual and physical-style screen manipulatives designed to assist neurodiverse learners, including students with ADHD, dyslexia, dyscalculia, or autism spectrum conditions.
Unlike generic conversational LLMs, Synthesis uses continuous interactive micro-assessments and multi-sensory digital manipulatives engineered by educators and neuroscientists specifically for K-5 math mastery.
Product capabilities
Key features
Adaptive Micro-Assessments
Continuously evaluates problem-solving understanding within each lesson instead of administering standalone exams.
Comprehensive K-5 Curriculum
Covers foundational concepts including counting, addition, subtraction, multiplication, division, fractions, and algebraic thinking.
Emerging Reader Accommodations
Automatically reads instructions and answer choices aloud for students under seven, with adjustable voice speed settings.
Multisensory Interactive Manipulatives
Uses hands-on visual and digital interactions to help students conceptualize abstract numerical relationships.
Automated Progress Reporting
Tracks problem attempts, accuracy, and milestone achievements to keep parents and educators informed without requiring constant supervision.
Free Adaptive Times Tables Flashcards
Provides quick multiplication fact practice without requiring an account or software signup.
Workflow
How Synthesis works
- Parents or educators register an account, set up a child profile, and select the starting grade or skill level.
- The student engages with interactive lessons that present math concepts through visual and interactive manipulatives.
- Embedded micro-assessments evaluate student answers in real time to diagnose comprehension gaps and adjust pacing automatically.
- Parents receive progress metrics while the student unlocks subsequent lessons covering advanced elementary math.
Practical fit
Who should use Synthesis?
Homeschool Math Curriculum
Supplements or anchors home education with self-paced instruction that advances only when mastery is demonstrated.
Remediation for Struggling Learners
Helps students who suffer from math anxiety or concept gaps rebuild foundational confidence at their own speed.
Enrichment for Advanced Elementary Learners
Allows younger students who have mastered basic arithmetic to accelerate into fractions and algebraic reasoning.
Classroom and Pod Instruction
Equips teachers with individualized math pacing and progress visibility across student cohorts.
Editorial assessment
Pros and limitations
Where it is strong
- Continuous real-time adaptation without stressful high-stakes tests
- Audio read-aloud tools make it accessible for non-readers and emerging readers
- Multi-sensory interface is specifically supportive of neurodiverse learners
- Structured pedagogy avoids the hallucination risks of open-ended chatbots
Where to be careful
- Curriculum scope is limited to elementary math (ages 5 to 11)
- Native mobile app support is currently restricted to iPad, with Android tablet support still in development
Commercial context
Synthesis pricing
At the review date in September 2026, Synthesis Tutor offers individual plans starting at $25 to $45 per month (or $999 lifetime) and family plans from $119 per year up to $1,499 lifetime, with school and classroom licenses available upon request. Rates frequently reflect promotional discounts; verify directly on the official pricing page.
| Plan | Price | What it includes |
|---|---|---|
| Individual Monthly | $45.00/month / monthly |
A discounted rate of $35/month is occasionally listed during promotions. |
| Individual Annual | $29.00/month / yearly |
Billed annually; promo rates show $25/month ($300/year). |
| Individual Lifetime | $999 / lifetime |
One-time payment. |
| Family Annual | $119/year / yearly |
Standard pricing is listed at $33.33/mo ($400/year), with discounted promos at $119/year. |
| Family Lifetime | $1,499 / lifetime |
One-time payment. |
Pricing, limits, taxes, model access, and regional availability can change. Verify the purchase-critical details on the official pricing page linked under Sources.
Transparent ranking
Why Synthesis scores 72.7
Each factor is scored on a 100-point scale, then combined using the public ToolsRank weights. Engagement and momentum stay at a neutral baseline until measured signals exist, so no tool can gain or lose position from numbers nobody recorded.
Compatibility
Languages, platforms, and integrations
Languages
- English
- Spanish
Platforms
- Web
- iPadOS
- Chromebook
Integrations & surfaces
- Stripe
Community
Reviews and questions
No approved member reviews yet. Editorial factors above are the only rating on this page.
Reviews and questions come from Google-signed members and are checked by an editor before they appear.
Frequently asked
Synthesis FAQ
What age group is Synthesis Tutor designed for?+
Synthesis Tutor is designed primarily for elementary school students between ages 5 and 11, covering elementary math concepts from basic counting through fractions and algebraic thinking. It can also serve younger learners seeking enrichment or older students who need reinforcement of foundational concepts.
Does Synthesis Tutor rely entirely on an LLM like ChatGPT?+
No. The vendor states that while it leverages AI where appropriate, the platform relies on in-house educators and neuroscientists who design and curate the pedagogical flows, interactive manipulatives, and micro-assessments rather than delegating teaching to an unconstrained language model.
Which devices support Synthesis Tutor?+
Synthesis Tutor runs on desktop computers, laptops, and Chromebooks via the web browser, and as a native app on iPad tablets via the App Store. The vendor notes that Android tablet support is currently in development.
Can emerging readers use the platform independently?+
Yes. For students under seven years old, questions and answer choices are read aloud automatically. This feature can be turned on or off for any user in the settings menu, and the tutor's voice speed can be adjusted.
How does Synthesis handle student data privacy under COPPA and FERPA?+
Synthesis complies with COPPA and requires parental consent for users under 18 before an account can be created. The vendor also complies with FERPA provisions when functioning as a school official handling student educational records.
