RunIntensity measures your training the way your body experiences it.

Every run is scored in stress-adjusted miles (SAM) — a five-factor model that weighs pace against YOUR easy pace, plus distance, elevation, surface, and fatigue. A 5-mile tempo and a 5-mile recovery jog are not the same run, and your training log shouldn't pretend they are.

READINESS, EVERY MORNING
Overnight heart-rate variability, sleep, and resting heart rate — each compared against your own baseline — blend with your recent training load into a single 0-100 readiness score with a clear recommendation: push, maintain, or recover. A home-screen widget keeps it one glance away.

YOUR TRAINING, ORGANIZED
• Automatic import from Health Connect (works with Samsung Health, Fitbit, Pixel Watch, Galaxy Watch, and more)
• Weekly SAM progression chart, workout log with notes, surfaces, and shoes
• Heart-rate and pace charts for every synced run
• Shoe mileage tracking with replace-at targets
• Soreness and injury logging
• Personal records and trophy case
• Plan workouts yourself, or accept plans from your coach

TRAIN WITH FRIENDS — FREE
The Bulletin Board shows your workouts and your friends' side by side, with reactions, comments, photos, and GPS route maps. Friends Mode is free for everyone, forever.

COACH BRADY (optional subscription)
An AI coach that knows your training history, readiness, goals, and injuries — ask it anything, and let it plan your week. Coach Mode adds a human-coach connection with a full web dashboard.

WEAR OS
Record runs from your watch with live heart rate, distance, and pace, and rate the effort when you finish — it syncs into your training log automatically.

Built for runners by runners. Your easy pace is the anchor; everything else is measured against it.