Synthesis Tutor
Adaptive, conversational maths tutor for young children
The Four Mismatches · Synthesis Tutor
Built for another system
Assessed for a Commonwealth / Global-South family (as an import).
- CurriculumN/A
Game-based problem-solving, not mapped to any school exam board — the curriculum axis doesn't cleanly apply.
- LanguageFail
English-only.
- PriceFail
A premium subscription, priced for a Tier-1 family.
- InfrastructurePartial
Cloud-based; needs a stable connection.
A distinctive early-maths approach — but premium and English-only, out of reach for the families this map is for.
addestra.com · The Four Mismatches Test. A single fail means it was built for a different system.
Independence: Addestra builds learning products too (MathsTutor, TinkerWell). We never review or score our own, and no tool pays to be listed or to rank higher — how we assess fit.
What it does
What the AI actually does — An adaptive-difficulty engine with real-time micro-assessments; uses AI where it helps rather than as an LLM chatbot.
Why it was built — Reimagine elementary maths and problem-solving as game-like, mastery-based learning rather than rote curriculum.
Who built it
- Company
- Synthesis School, Inc.
- Founders
- Josh Dahn · Chrisman Frank
- HQ / origin
- San Mateo, California, USA
- Founded
- 2020
- Model
- B2C
- Languages
- English
- Pricing
- ~US$29–45/month (individual)
We record durable facts only — no funding-raised or user-count figures. Unverified fields are marked [TBD] rather than guessed.
The fit assessment
The scorecard above scores Synthesis Tutor on the four axes on which exported EdTech fails to fit a local system — assessed for a Commonwealth / Global-South family (as an import). The verdict: A distinctive early-maths approach — but premium and English-only, out of reach for the families this map is for. For the full framework, see the Four Mismatches Test.
Where it sits
Synthesis Tutor is on the EdTech AI 100 map, in whole-curriculum ai tutors, built in United States.