§ HoliX Gym & coach OS · In development · holixos.com

Coach-led.
AI-assisted.
Never bypassed.

HOLIX · COLAB STUDIOS

HoliX is the operating system for gyms, coaches, and performance communities. AI generates programming and content. Coaches review and approve before anything reaches members — enforced at the database layer, not just the UI. Integrated payments, HIPAA-first architecture, and a canonical exercise library of ~1,593 movements. Built by CoLab Studios for the coaches we actually work with.

Get in touch
Coach-in-the-LoopAI ProgrammingSession LoggingPR TrackingHIPAA-FirstMulti-TenantPWACanonical Exercise LibraryCoach-in-the-LoopAI ProgrammingSession LoggingPR TrackingHIPAA-FirstMulti-TenantPWACanonical Exercise Library
§ 01 — Why HoliX

The coach's software problem

Coaches stitch together six tools. HoliX replaces them.

Most gyms run on Mindbody for scheduling, Trainerize or TrueCoach for programming, QuickBooks or Stripe for billing, a messaging app for check-ins, and a stack of spreadsheets holding the whole operation together.

Every tool takes a subscription, a login, and fifteen minutes of context-switching per client. And none of them speak to each other.

HoliX is one system for the coach-client relationship. Programming, assessments, session logging, check-ins, payments, scheduling. All connected. All delivered under a coach-in-the-loop model that protects the trainer's role as the professional in charge.

Long term, HoliX is positioned to be what Stripe was for payments — the infrastructure layer that every gym, trainer, and performance brand runs on.

§ 02 — The core model

Coach-in-the-loop AI

AI generates. Coaches approve. Enforced at the database.

Every tool that puts AI in a trainer's workflow has to answer one question: does the AI talk to the client, or does the coach?

In HoliX, the answer is hard-coded into the database. AI generates programs and content. Coaches review, edit, and approve. Nothing reaches a member until the coach signs off — and the row-level security that enforces this lives at the Supabase schema layer, not the UI. This protects the coach's role, the client's trust, and the business the trainer has built.

LOOP 01 AI generates Programs, assessments, and content drafted by Claude with the canonical exercise library injected as context — so outputs map to real movements, not hallucinations.
LOOP 02 Coach reviews & edits Coaches see AI output in a preview editor, adjust sets/reps/loads, swap exercises, add notes, and customize delivery per client.
LOOP 03 Coach approves A single explicit approval action moves content from draft to assigned. Nothing else publishes. Nothing skips this step.
LOOP 04 Member receives Only approved content appears in the member app. Enforced at the row-level security layer — no UI bug can bypass it.
§ 03 — For coaches & gyms

The operator's side

Built for the coaches running a real business.

Module 01

AI program generator

Claude-powered · Coach-reviewed

Generate custom programs with Claude Sonnet 4.6. The system prompt injects roughly 120 canonical exercises as context so the AI draws from real movements. You review, edit, and approve before anything assigns.

  • AI-drafted programs
  • Coach preview & edit
  • Exercise swaps on the fly
  • Mandatory approval gate
Module 02

Canonical exercise library

~1,593 movements

A normalized exercise database sourced from open datasets (free-exercise-db, wger) plus custom supplements for Smith machine, cable, landmine, sandbag, and conditioning work. Every AI output maps to a real library entry.

  • ~1,593 canonical exercises
  • Mapped to AI outputs
  • Equipment & muscle tags
  • Extensible per gym
Module 03

Client management

Roster · Notes · Progress

One record per client. Profile, goals, session history, measurements, private coach notes, and progress across every stream — programming, payments, attendance. No more “which app did I write that in?”

  • Client roster & profiles
  • Session & attendance history
  • Private coach notes
  • Cross-stream progress view
Module 04

Payments via Stripe Connect

Trainer & gym billing

Recurring session packages, one-off billing, and automatic renewals. Stripe Connect handles multi-party payouts so trainers working inside a gym get paid cleanly without manual reconciliation.

  • Stripe Connect payouts
  • Recurring packages
  • One-off session billing
  • Automatic renewals & receipts
Module 05

Session delivery

Rest timer · PRs · Logs

Clients log sessions in real time with sets, reps, weight, and a built-in rest timer. PR detection highlights the best row in gold. Every workout logged feeds back to the coach for review and programming adjustments.

  • In-session logging
  • Built-in rest timer
  • PR highlighting
  • Workout history & stats
Module 06

HIPAA-first architecture

Not bolted on

HIPAA controls are foundational, not a retrofit. Row-level security for every tenant, encrypted storage, audit logging, and strict multi-tenant isolation. Built to hold the sensitive data that wearables and clinical assessments will bring.

  • Row-level security
  • Multi-tenant isolation
  • Encryption & audit logs
  • Controls designed for PHI
The Stripe of fitness. Infrastructure every gym runs on.
— The HoliX long-term thesis
§ 04 — For members

The client-facing experience

A mobile-first PWA. Install it like an app.

The member side of HoliX is a mobile-optimized progressive web app. No App Store. No Play Store. Install it to the home screen, sign in, and it behaves like a native app with full-screen UI, safe-area handling, and a tab bar.

When a native iOS and Android app is justified by wearable and HealthKit needs, we'll ship one. Today, the PWA covers every core flow — log in, see your approved program, log a session, see your history, track PRs. Fast, installable, maintained.

MEM 01 Sign in Clerk authentication with member role — scoped to only see what your coach has approved.
MEM 02 See your program Assigned programs appear only after coach approval. Clear exercise instructions, sets, reps, and coach notes.
MEM 03 Log a session Track sets in real time with a built-in rest timer. PRs highlight automatically. Sync happens in the background.
MEM 04 Review history Full session history and stats. Compare past performances, see trends, share highlights with your coach.
§ 05 — In development

HoliX is in development.

We're building HoliX as a fitness operating system for gyms and trainers. It isn't open yet. Tell us if you want to hear when it is.

Get in touch
§ 06 — Under the hood

For the curious

Modern stack, built for scale.

Stack 01

Frontend

Web + PWA.

  • Next.js 16
  • React 19
  • shadcn/ui
  • Tailwind CSS
Stack 02

API

Typed & fast.

  • Fastify (TypeScript)
  • Hosted on Vercel
  • Turborepo monorepo
  • pnpm workspace
Stack 03

Data & auth

HIPAA-aware.

  • Supabase (Postgres)
  • Row-level security
  • Clerk 7 (member, coach, gym)
  • Multi-tenant from day one
Stack 04

AI & payments

Claude + Stripe.

  • Claude Sonnet 4.6
  • ~120 exercise hints in prompt
  • Stripe Connect
  • Canonical exercise library
§ FAQ

Honest answers

Before you get in touch.

Those tools each solve one slice. TrueCoach and Trainerize deliver programming but don't handle gym operations or payments. Mindbody handles scheduling and billing but is weak on programming and dated on UX. HoliX integrates all of it, with coach-in-the-loop AI as the core philosophy and HIPAA-first architecture as the foundation for wearables and clinical-grade data ahead.
AI generates drafts. Coaches review, edit, and approve before anything reaches a client. This isn't a UI suggestion — it's enforced in the database. A bug in the front end can't accidentally push AI content to members. The schema itself says only approved content is visible.
Not today. The member side is a mobile-optimized PWA that installs to your home screen and behaves like a native app. A native React Native app is planned when wearable and HealthKit integrations justify it.
We provide CSV import templates and concierge migration for early partners.
No. The member PWA is included when you're an active coach on the platform. Your clients install it, accept your invite, and their access runs alongside your coaching relationship.
HoliX is a CoLab Studios product, built in collaboration with the coaches at P10 (who share a roof with us) and across our network. It's informed by watching how real trainers run their businesses — not by what a venture-backed team guessed the market wanted.
§ Stay posted

Tell us if you want to hear when it opens.