Engineered for Masters.
We didn't just build another software. We built a high-performance OS to eliminate the technical debt that holds martial arts pioneers back.
MAS9 has also been featured across multiple online news outlets, including Yahoo Finance.
As Featured In
Recognized Across Online Media
Why we built MAS9
“I built MAS9 because I saw how much time school owners were losing to admin work — time that should have been spent on the mat.”
Every week, martial arts school owners were dealing with billing errors, attendance tracking, and chasing down unpaid fees — spending hours on tasks that had nothing to do with teaching.
MAS9 was created with one clear purpose: to give that time back. To automate the work that doesn't need a human, and simplify the rest — so you can focus on what matters: your students, your school, and your art.
We don't just build software. We build systems that let great instructors do less admin and more of what they love.
Ben Ryoo
Founder & CEO, MAS9
Built for school owners who want elite systems.
MAS9 unifies operations, retention, communication, and growth workflows into one operating system so your team can focus on teaching, not tool juggling.
1,000+
Schools Supported
24/7
Automation Engine
Our Values
Every feature is shaped by real school operators, tested in real classes, and designed to improve execution at scale.
- Designed by school owners
- Obsessed with practical UX
- AI-first, operator-controlled
- Transparent product partnership
Focus
Train students, not spreadsheets
Execution
Systems that scale with your team
Growth
Retention and revenue in one view
Next Step
Build the school experience your members remember.
Launch with a proven operating framework for attendance, billing, communication, and growth.