Questions, answered.

Kosoku is a performance training platform with two connected surfaces: a web workspace where coaches build and assign programs, and a mobile app where athletes execute and log their training. Every set logged on the floor syncs straight back to the desk.

No. Coaches mostly live in the web workspace and athletes mostly live in the app — each works well on its own. Used together they form one system: a program built at a desk appears on an athlete's phone the moment it's assigned.

Kosoku (高速) is Japanese for "high speed." It is a reminder of what we are building toward — a platform that moves as fast as you train and coach.

Yes — completely free, forever. Create and log your own workouts, track history and progress, and join a coach or team by invite without paying anything.

Absolutely. Build and log your own training independently from day one. If a coach later invites you, their assigned programs simply appear alongside the work you're already doing.

Your training history, PRs and preferences belong to your account, not your coach's — they travel with you regardless of which coach or team you're connected to.

It depends on your plan: Coach Starter covers up to 15 active athletes, Coach Pro covers up to 100, and Team plans offer higher, custom limits.

You can rebuild programs quickly using templates and the drag-to-copy schedule. For larger libraries, get in touch and we'll help with migration.

Select the athletes or a whole squad, choose a program, and assign — it takes seconds, and changes sync to every phone in real time.

Multiple coach and staff seats, squad and roster management, attendance tracking, file sharing, messaging, and role-based permissions for your organization.

Pricing scales primarily with the number of active athletes, not with feature gates — every tier gets the full toolset. The athlete app is always free.

Kosoku is currently in a free, invite-only beta — there's no plan to cancel yet. Pricing goes live at general availability with advance notice, and you'll be able to pick and change plans from your account at that point.

The web app is live today and already works well in a mobile browser. Native iOS and Android apps are landing soon — get in touch and we'll notify you the moment they're available.

Yes — the web app works in your mobile browser right now. The dedicated native apps will bring a faster, gym-floor-optimized experience once they launch.