Grounded in published sport science

Training analysis, read like a coach reads it.

Connect the tools you already train with and QuikShift turns your data into clear, AI-read answers — every one traceable to peer-reviewed sport science. The depth of WKO and intervals.icu, finally a pleasure to use.

Get started free → Analyze a file first

Works with Strava, Garmin, intervals.icu, TrainingPeaks and 14 more.

Connects with everything you train on

Strava
Garmin
intervals.icu
TrainingPeaks
Wahoo
COROS
Polar
Suunto
Zwift
Whoop
Oura
Apple Health
Google Fit
Fitbit
Peloton
Hammerhead
Stryd
Concept2
+ more every month

The whole picture, in one place

Every metric the serious tools give you — without the learning curve.

Power-duration curve

Critical Power and W′ from your best efforts, tracked over time.

Fitness, fatigue & form

The Banister PMC — CTL, ATL, TSB — so you peak on purpose.

Time-in-zone

Polarized vs threshold, session by session and across the block.

Training calendar

Week-by-week and day views, with weekly load — built like the tools you know.

Wellness & readiness

HRV, resting HR, sleep and subjective load, trended against your training.

AI coach notes

A read of what changed and why, in plain language, after every key session.

No black-box scores

Every number traces back to the peer-reviewed method it's built on. Browse the full, linked science library — each metric beside the paper it comes from, kept current as new research lands.

Explore the science →