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The only system that dynamically periodizes every athlete, every week.

Stop following rigid PDFs. Harrier rebuilds your plan to peak precisely on race day, adjusting for fatigue, PRs, and your actual schedule.

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AI Pro Plan

$12/mo

Dynamic AI periodization. Your plan rebuilds every week based on fatigue, schedule, and progress to peak exactly on race day.

Free Tracking

$0/mo

Manual tracking & analytics. Sync your watch, log workouts, and track your PRs getting there without AI guidance.

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MM / YY

CVC

Connect your wearable to sync training data automatically.

Garmin Connect

Power, cadence, HR, GPS dynamics

Coros

HRV, sleep score, training load

Apple Health

Steps, HR, workouts, HRV

Fitbit

Steps, sleep, heart rate zones