Not another workout logger

Your Fitness
Simplified

Castra is an all-in-one fitness app that replaces workout trackers, progress apps, and coach communication - so everything you need to train smarter lives in one place

Stop juggling a logger, a planner, and a group chat. Castra is one app.

For Coaches

Built to run your business

Client roster and client detail screensPlan generation wizard, assigning a plan to a clientA coach's branded community feedCustom check-in form builder and a client's submitted answers
For Athletes

Built to train like an athlete

Muscle activation map and training load statsGPS run tracker with route map and shoe selectedChallenge progress and detailsSocial feed and friend stat comparison
One App

One relationship, Not two apps

A coach reviewing a client's progress
The coach side
An athlete training
The athlete side

A coach assigns a plan and a check-in form. An athlete logs a workout, asks a question, and gets a reply - all in the same thread the check-in lives in. No email, no separate form tool, no missed DMs.

How it works

Three steps, one app

01

Coach builds a plan and a community

02

Athlete gets assigned the plan and joins the community

03

Both track progress together - messages, check-ins, workouts and runs, in one feed

Cross-Training

Every discipline, one library

From HIIT to strength to spinning - the exercise library covers it, whether you train with a coach or on your own.

HIIT HIIT
CrossFit CrossFit
Strength Strength
Spinning Spinning
Yoga Yoga
Pilates Pilates
Zumba Zumba
Kickboxing Kickboxing
Tabata Tabata
Functional Functional
TRX TRX
Calisthenics Calisthenics
Aqua Fitness Aqua Fitness
Browse the exercise library
Pricing

Start free. Upgrade when you're ready.

Free

Up to 5 clients, core check-ins and messaging.

Athlete Pro

Unlimited plans, exercises, and full analytics.

Athlete training

Run your business. Train like an athlete.

Free to start, on iOS and Android.