For your members
One simple app onboarded in minutes, in your gym's brand. One button, today's session. Wearables, booking, community, and their coach, all in one place. Body, mind, and spirit, built in.
Capabilities
Whatever your fitness business needs, the system does it.
Marrow is the operating system your fitness business runs on. We build the parts you would rather not touch, keep them running, and grow them with you. Members see one simple app. You see everything behind it.
Live now The core platform is live and running in production for our flagship gym.
Built on request Scoped in your diagnostic, built in your brand, shipping through 2026.
What the system covers
One system, three people it takes care of.
Members only ever touch the simple app. Coaches see who needs them first. You see everything behind it. The same machine, shown three ways.
For your coaches
A roster with a weekly check-in that tells the coach who to reach first. A program builder, multi-coach teams on one client, verified credentials, and more ways than one to earn. When a coach leaves, the members stay with you.
For you
One console across every coach and every location. Revenue, coach splits, retention signals, billing, and payouts, with your brand on the app. We build and run the parts you would rather not touch.
What Marrow runs for your business
Run. Grow. Operate. One machine.
Your members only ever touch the first one. You get all three.
Run
The simple member app
One screen for your members, in your gym's brand. Workout, nutrition, and biofeedback in one place. One button, go.
Grow
Your site and your leads
A branded site and a place on the discovery map that send new members your way, plus the marketing and the AI ad factory behind it.
Operate
The owner's controls
One screen for revenue, coach splits, retention, and locations. The learning hub and certifications live here too.
Two ways to get it. Start on the platform and drive it yourself, or have it built for you. See Operating Partners.
Problem to solution
You have the problem. The system has the part that solves it.
Whatever you run, the build lands on one operating system. Here is that system by the problem it solves, platform-led, with the done-for-you build as the way you get it.
Members drop off and drift away
Member experience
One simple app onboarded in minutes. One button, today's session. Wearables, booking, community, and a weekly check-in that tells the coach who to reach first. Body, mind, and spirit, built in.
Too many clients to track
Coaching operations
A roster with a needs-review queue, a program builder, multi-coach teams on one client, verified credentials, and more income streams. The data stays with the gym when a coach leaves.
Cannot see the whole business
Owner and multi-location
One console across every coach and every location. Per-coach splits, billing, payouts, the gym-branded app, and a network structure for franchises and aggregators.
Leads come in and never convert
Growth and marketing
Landing pages and the discovery map are standard. The AI front desk, reputation engine, content engine, and trial nurture are built and run for you, sold on recovered dollars.
Stuck on a tool you hate
Migration and back office
White-glove migration off your old tools, or an orchestration layer on top of what you run today. Failed-payment recovery, an ops copilot, and a recovered-revenue dashboard, run for you.
Whose data is it, really
Trust and anything custom
Verified coaches only, per-tenant isolation, no-index authenticated surfaces, and a documented exit. Custom apps, web, integrations, and tools built in your brand. You own your data.
These are the common shapes, not the limits. If your business needs something none of them name, we build that too. The diagnostic sets the exact shape. See what you get.
Custom anything, and it stays yours
You own it. We do the heavy lifting.
The only operating system built and run for fitness businesses. Your data and accounts are yours, payments run on Stripe, and you are never locked out. AI employees handle the busywork, a human coach drives every interaction, and you decide whether the AI is on. Each one is an employee, not a tool: it owns its job all day, every day, without being asked. See the AI employees and the jobs they run.
Tell us what you run, and what is breaking.
Book a diagnostic call and we tell you which part of the system solves it. We take a small number of founding partners at a time.