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Crucible Fit

A daily functional fitness test for iPhone and Apple Watch. Stations, reps and the Crux, sized to your readiness and your kit.

Download on the App Store

Crucible Fit is coming to Android

Today it's on iPhone and Apple Watch.

Get Crucible

Crucible Fit

  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing

Explore

  • Training Guides
  • Exercise Library
  • FAQ
  • Press
  • Support

Legal

  • Terms and Conditions
  • Privacy Policy
  • Consumer Health Data Notice

CRUCIBLE FIT™ and Crux by Crucible Fit are trademarks of Crucible Fit, LLC.

© 2026 Crucible Fit, LLC. All rights reserved. Apple, the Apple logo, iPhone and Apple Watch are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc.

Train Your Way

And on the other days, train your way.

The full training toolkit for everything that isn't today's Crucible. One subscription covers it.

Everything else you train.

  • A 5,000+ movement library

    Every movement with video and instructions.

    Browse the library→

  • A planner

    It builds a session from what you're training and how long you have.

  • Saved workouts

    The sessions you like, one tap from starting.

  • Protocols

    Circuits, EMOM, AMRAP, supersets and pyramids.

  • History and personal records

    Every session by date, with personal records as you set them.

  • A strength index

    A trend of your strength that counts your Crucible loads too.

The Train tab: saved workouts that start with one tap, with Programs and the planner below.
Workout history: a 27-day streak, 2 hours 32 minutes this week, and The Whole Hour logged today.

Readiness

Push when you're ready. Ease off when you're not.

The Health screen: a readiness of 89 built from HRV, sleep, training load and resting heart rate.

Readiness reads your sleep, HRV, resting heart rate and training load from Apple Health, and imports your last 28 days of history when you connect.

For roughly the first week it shows the score but holds back the verdict, until it has your own baseline.

The morning brief arrives on iPhone once a day, after last night's sleep syncs and never before 5 am. It names today's Crucible and why.

Readiness is a training guide, not a medical measurement. Crucible Fit is not a medical service.

On every device you sign in to

Your training syncs across your devices.

And on the other days, train your way.

Your first Crucible is on us. Then $14.99 a month with a 7-day trial, or $119.99 a year with a 14-day trial.

Download on the App Store

Crucible Fit is coming to Android

Today it's on iPhone and Apple Watch.

Get Crucible