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Crux
FR

Coming soon to iOS & Android

Climb. Log.
Progress.

Crux logs your boulders and routes, guides your training and keeps an eye on your fingers, so you progress without getting hurt. And never any ads.

Get the app See how it works

Free tier forever · Optional Crux Plus · French and US grades

How it works

It all comes down to four moves.

The logbook and the coach live in the same app. No account needed, and no hidden subscription.

  1. Log your boulders and routes

    Pick boulder or route, pick the grade, and it's logged in three taps. Grades come in French or US flavours.

  2. Follow a guided plan

    Finger-strength, endurance and warm-up sessions, with a timer and a description for every exercise.

  3. Track how you feel

    After each session you note your fatigue and how your fingers feel. That's often where an injury shows up first.

  4. See your progression

    Your climbs per grade and your trend week after week, so you know where you stand. Everything stays on your phone.

Before · After

What actually changes.

Everyone starts a paper logbook motivated, and everyone gives it up. Crux does that work for you.

Today, without Crux

  • Your sends end up in an iPhone note, then get lost when you switch phones.
  • You repeat the same grades because you don't have a progression plan.
  • You don't know how your fingers are holding up, until the day something snaps.
  • You can't tell if you're climbing harder than three months ago.

With Crux

  • A chronological log of every session, kept local on your phone.
  • Guided finger-strength and endurance sessions, with per-exercise timers.
  • Finger condition noted after every session — an early warning you can act on.
  • Your progression by grade and by week, visible at a glance.

Features

Three pillars, one logbook.

We'd rather do three things really well than ten halfway.

Sessions

Your climbing logbook, always up to date in your pocket.

  • A timer per boulder or route
  • French (6a, 7b+) or US (V5, 5.12a) grading
  • Full history, filterable by period

Workouts

Guided plans — finger strength, endurance, warm-up.

  • Per-exercise timer with structured rest
  • Session library (Pan Güllich, hangboard, ARC)
  • Post-session tracking: fatigue and finger condition

Progression

Clear stats that show you where you stand and what to aim for next.

  • Climbs per grade and volume per week
  • Custom reminder if you haven't climbed in N days
  • No ads, no tracking — account optional

From your first boulder to your personal record.

Whatever your level, your gym or your discipline — it all fits in the logbook.

Pricing

Free for the community. Plus for the coach.

All of Crux is free, forever: the logbook, the workouts, the stats and sync. Crux Plus adds the AI coach, and that's what funds the rest.

Free

€0 forever

  • Unlimited boulder and route logbook
  • Unlimited workouts, library included
  • Full stats and progression
  • Multi-device sync (free account)
At launch

Crux Plus

€3.99 / month

  • An AI coach that tells you when to push and when to rest
  • Generated training plans
  • Boulder photos backed up in the cloud
  • Early access to new features

Data hosted in Europe, never sold, never used to train AI.

FAQ

The questions we get.

If yours isn't here, write us at support@crux-climb.app.

What is Crux, in one sentence?

A climbing session log with guided workouts for finger strength and endurance. Local, no account required, no ads.

Is it free?

Logbook, workouts, stats, sync: everything is free, forever. Crux Plus, the optional subscription, adds the AI coach — it tells you when to push and when to ease off, based on your load and your fingers — plus generated training plans and cloud backup of your photos.

Where is my data stored?

On your phone first. Cloud sync is optional and free (with an account) — without it, nothing leaves your device. No analytics, no ads, ever.

Are iOS and Android supported?

Yes, both — from the public launch.

Which grading systems are supported?

French (boulder 3a → 9c, route 3 → 9c) and US (V0 → V17, 5.6 → 5.15d). Pick one in Preferences — everything converts automatically.

When does it launch?

The app is in final testing with a hand-picked group of climbers. As soon as it feels solid, it lands on the App Store and Google Play.

Launch

Soon in your pocket.

Crux is in final testing with a small group of climbers. Once everything feels solid, the app will land on the App Store and Google Play.

Coming soon App Store Coming soon Google Play

A question in the meantime? support@crux-climb.app