Boston, Massachusetts
Boston's judo scene is small but elite, with strong university affiliations (Harvard, MIT, BU all run clubs) and several USJF-affiliated dojos serving the broader metro. The market values formal grading, technical depth, and tournament participation over fitness or fun-first programming. Cold winters drive consistent year-round indoor training.
The local picture
Why it works for Boston
OLM's belt_promotions ledger captures every grading with issuing sensei, date, free-text context — appropriate for the formal Kodokan-aligned grading culture. Tournament-team members can sit on add-on subscriptions stacked on base membership for travel pools, entry fees, and team-gear contributions. AI Monitor's seasonal-pattern detection separates weather dips from real churn signals.
In every Judo gym, anywhere
Kyu and Dan tracking with promoter lineage
Every grading recorded with the issuing sensei, date, and context. If a student moves to another dojo that also runs OLM, their Dan rank lineage travels with them.
Attendance against grading minimums
Set mat-hour requirements per rank. OLM tells you who meets the threshold for their next grading and who's short.
Shiai & event registration
Stripe-powered sign-ups for tournaments and events. Members pay from the app, you get a clean registration list with waiver status.
Multi-discipline aware
A judoka who also trains BJJ keeps separate ranks per art. Cross-training students are first-class in the system.
Boston Judo academies we've heard of
Tohoku Judo Club · Pedro's Judo Center · MIT Judo Club
Listed for context only — no endorsement implied. If you run one of these and want OLM to power it, say hi.