Engine

Running · Cycling · Swimming · Multisport

See what your training is really doing.

Upload your FIT files. Get fitness, fatigue, form, efficiency, decoupling — every metric your watch records, computed the way coaches actually use them.

engine — training

Fitness · CTL

82

Form · TSB

+4

FTP

250 W

Critical speed

3:50/km

Fitness Fatigue
Today: push · target 95 TSS

Fitness, fatigue, form

CTL, ATL, TSB tracked daily — with a forecast that projects the coach's plan all the way to race day.

Every detail your watch records

Running dynamics, HRV, swim SWOLF, power and decoupling for the bike. Not summary stats — second-by-second.

Multisport-aware

Triathlon, duathlon, aquabike — multi-session FITs become one tidy event with a leg-by-leg breakdown.

Sport-specific diagnosis

Critical speed, FTP, CSS from your own best efforts — and a prioritized "what to train" backed by the actual literature.

Video technique review

Upload a short clip of your run, ride or swim: get frame-by-frame criticalities with concrete corrections and drills.

Plan vs. done

Your coach's week next to what actually happened, with honest compliance — extra work doesn't cover a missed swim.

Ready to see your numbers?

Free to use. Your data stays yours — export anytime.