A coach reviewing a client's progress on their phone
For Coaches

Run your coaching business from your phone.

Whether you train clients online or in person, our platform gives you the tools to manage workouts, track progress, host classes, and build a thriving fitness community.

Client roster list and a client's detail view with check-ins and training load insights
Client Management

Every client, one roster.

See who's consistent, who's growing, and who's gone quiet - before they tell you. Per-client notes keep context from every conversation.

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Plan generation wizard, assigning a generated plan to a client
Workout Plans

Every plan, every stat, one place.

Generate a plan or build one by hand, then track a client's stats and schedule without leaving their profile - no exporting a PDF, no re-typing it into a chat.

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A coach's branded community feed
Community

A space that's actually yours.

Bring your clients into a branded community - posts, challenges, and rules you set - instead of a generic group chat.

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Custom check-in form builder and a client's submitted answers
Check-ins & Custom Forms

Ask what actually matters.

Build your own check-in forms and review answers right inside your conversation with each client - not in a separate form tool or inbox.

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Messaging thread with an inline check-in card
Messaging

One thread per client.

Questions, check-ins, and plan updates live in the same conversation - nothing gets lost across apps.

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Build a public track record.

Clients rate you as a coach - new clients see your real rating and reviews before they reach out, the same way they'd check reviews for anyone else they'd hire.

Without Castra vs. with Castra

Without Castra With Castra
A logger app + a program-builder doc + a group chat app + no real community One app.
Rebuilding a plan from scratch each time Generate & assign in minutes
A generic group chat for clients Your own branded community
Check-ins emailed or in a separate form Check-ins reviewed in chat

Start free

Free covers up to 5 clients. Coach Pro unlocks unlimited clients, plans, and communities.

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Coach and client

Ready to Grow
Your Coaching Business?

Join a platform built specifically for fitness professionals who wants to build a community, and grow their business