CRITIX FIT Open the app
The Living Run

Train with
a team that
never sleeps

Four AI coaches watch every heartbeat and rewrite your plan the moment life moves. The future of AI training is already running.

Alex, your head coach
Head coach

A head coach
with total recall

Coaching with unlimited memory: every run, every rough night, every comeback, read at once. When today breaks the plan, he rebuilds the week in seconds and tells you why.

Message him at 5 AM. He answers in seconds, with your whole history in front of him.

Alex Easy now. That hill surprised both of us, so give me two minutes in your green zone.
Alex There it is. Your heart rate is settling, and you are stronger than you were last month.
You How do you know?
Alex Same hill three weeks ago, eleven beats higher. I keep your receipts.
Voice sample arriving with the coach portraits
The plan engine

One conversation
becomes twelve weeks

Name the goal, the race, the mornings you own. The engine compiles a season for exactly one athlete on earth.

Goal · First marathon Race day · October 18 4 mornings a week History · Knee, 2024 Dream · Under 4 hours
Race day

Move one answer and the whole season recalculates. A living plan: that is the future of AI training.

On your wrist

Every session lands
on your watch

The day's work is standing on your wrist before you step out the door. Native FIT, ICS and GPX: Garmin and Apple speak it fluently.

FITICSGPX
Every discipline · Swim

Water is a language
your coach speaks

Name a triathlon and the system changes state: pace zones become stroke rhythm, and recovery counts in one heartbeat currency across every discipline.

Every discipline · Ride

Same coach
different saddle

Tuesday's watts surface in Thursday's legs. One shared model of you, so the ride never steals from the run.

Every discipline · Race day

Race day was
simulated weeks ago

A pace for every kilometer, fuel before you feel the need, a plan for the wall at thirty four. The gun fires and you already know the ending.

Your coaching team

Four coaches
on every heartbeat

They share notes about you in the background. You see one plan that keeps getting smarter.

Alex, head coach

Alex

Head coach

Architect of the season. Rebuilds the future the moment today changes.

Marcus, physio

Marcus

Physio

Catches the niggle at kilometer nine before it becomes an injury.

Sofia, nutrition coach

Sofia

Nutrition

Nutrition science, timed to the exact sessions that need it.

Mia, mental coach

Mia

Mental

Keeps your head in the race when the distance gets loud.

Live demo

Move a slider
watch the week rewrite

The engine, live on this page: drag a slider and Alex rebalances the week on the spot, and tells you why in one line.

A balanced build week, exactly where you want to be.

Race predictor

Your finish time
already exists

Somewhere in your data, your next race has already been run. Every session sharpens the projection, from 5K to marathon.

5K19:42
10K41:05
Half1:31:20
Marathon3:12:44
Route planner

Draw tomorrow's
route tonight

Sketch the loop, see the climbs before your legs do, send it to your watch. The glowing line down there is tomorrow.

Voice

A coach you can
actually talk to

Ask out loud and Alex answers in his own voice, in your language, at 4 AM or kilometer thirty. It used to be science fiction. Now it sounds like Alex.

Coming with the CRITIX app
Live in-run coaching

Live pacing
in your ear

Pace calls and fueling cues from the coach who wrote the session. The future of AI training does not live on a screen. It runs beside you.

The finish line is a starting line

Your first plan is
three minutes away

Answer a handful of honest questions and a team of four starts building your first week. Bring a goal. They handle the rest.

Start your run

Free to start, and your coaches are already awake