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Crucible

Science-backed strength training built around your body, time, equipment, and history. Supersets, circuits, EMOMs, pyramids, drop sets, ladders — 12 protocols with full progression tracking and Apple Watch support. Every workout is built for you, from scratch, every time.

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Adaptive strength training

Your workout adapts. Every time.

Science-backed strength training built around your time, equipment, and history. No templates. No guessing.

Start Free TrialSee How It Works
App Storeからダウンロード

The App Store link will appear here when the public listing is ready.

Personalized workout in progress

Your time. Your equipment. Your workout.

You tell Crucible what today looks like. It builds the rest.

Setting up a session
Set up
Mid-workout
Train
Session complete
Done

Built different. On purpose.

Adapts to your day

Time, location, equipment, energy. Every session is built fresh.

Duration, location, equipment, recovery — all inputs, every time.

Remembers everything

Your history shapes every workout. Nothing gets lost.

Sets, reps, weight, effort — session to session.

Every style of training

Supersets, circuits, drop sets, pyramids, EMOMs — however you like to train.

Standard sets, supersets, circuits, EMOMs, pyramids, drop sets, ladders.

Built for how you actually train.

Crucible generates every workout from real inputs — your time, location, equipment, training history, and how you’re feeling. Every style of training. Full progression tracking. Apple Watch support.

Saved gym with equipment profile

Your gym, remembered

Each location keeps its own equipment profile.

Training style selection

Every style of training

Supersets, circuits, drop sets, pyramids, EMOMs — however you like to train.

Progress and trends over time

Full progression tracking

Effort scores, volume trends, long-term history.

Watch app mid-session

Apple Watch

Session controls, timers, and context on your wrist.

Three steps. Thirty seconds.

Session setup screen
01

Set your session

Time, location, equipment, muscle groups, how you want to train.

Active workout screen
02

Train

The workout Crucible builds for you.

Session summary screen
03

Track

Your sets. The next session picks up here.

Stop guessing. Start training.

Your first workout is free. See what training looks like when it actually fits.

Start Free TrialSee How It Works
App Storeからダウンロード

The App Store link will appear here when the public listing is ready.

Free trial on the App Store. Cancel anytime.

Common questions

Do I need experience?+

No. Crucible builds the workout. You do the work.

What if I only have 20 minutes?+

Duration is part of every setup. Crucible builds a real workout for whatever time you have.

Can I use it at different gyms?+

Yes. Each location keeps its own equipment profile.

Does it work with Apple Watch?+

Yes. Session, timers, and controls on your wrist.

How does the free trial work?+

Download from the App Store. Full access. Cancel anytime.