Synthesis Tutor is an AI personal math tutor for ages 5-11, born from the experimental school Elon Musk asked Josh Dahn to start at SpaceX in 2014 — adaptive, gamified, and hands-on.
Synthesis Tutor’s origin is unusual: it distills the innovative learning experiences from Ad Astra, the school founded with Elon Musk at SpaceX for children who are “enthralled by complexity.” Now serving 35,000+ families worldwide, the product focuses on one thing — making children genuinely fluent in math, ages 5 to 11.
The tutor is warm, patient, and encouraging by design. It adapts in real time to each child’s ability, targets gaps with customized instruction, and makes math hands-on through a multisensory experience — turn counting, fractions, and algebraic thinking into play rather than worksheets. It covers the standard K-5 math curriculum and goes much further, with immediate evaluation and adaptation after every problem.
For parents the pitch is hands-off confidence: weekly AI-generated progress reports, a dashboard showing what was learned, and no daily hovering required. Reviews from parents commonly report children going from hating math to asking for more of it.
Getting started is free, and the family plan includes a 7-day free trial. As of October 2026, the Synthesis family plan costs $29/month or $119/year for up to 7 children; individual and single-child options are also offered. Pricing verified via aifunlab.io and brighterly.com comparisons.
Ideal for parents of ages 5-11 who want math fluency beyond school worksheets, including homeschoolers. Less suitable for middle/high schoolers, who have outgrown the K-5 scope — Khan Academy and Khanmigo fit from about age 9.