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.

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

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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 →