Your fitness app is lying to you.
Strava says 320 calories. Apple Fitness says 310. Garmin says 305. You just carried a 40-pound pack for 4 miles — and every app on your phone treated it like a casual stroll.
Generic fitness apps were built for runners. They have no idea what a loaded ruck does to your body. They ignore your pack weight entirely. That means every calorie count, every effort score, every "great workout" notification you've ever received while rucking has been wrong.
Ruckaroo fixes that.
MEET YOUR RUCK SCORE
Ruckaroo is the only app that calculates your true calorie burn using the Pandolf equation — the same military-grade formula the US Army has used since 1977. It accounts for every variable that matters: your body weight, pack weight, pace, terrain, and elevation. The result is your Ruck Score — a 0 to 100 performance metric that finally reflects how hard you actually worked.
Same route. Same distance. 40-pound pack. That's 380 calories, not 320. Now you know.
TRACK WHAT ACTUALLY MATTERS
• Log every ruck: distance, time, pack weight, location, and terrain
• Get your Ruck Score after every session — a single number that captures your true effort
• See your real calorie burn, not a generic walking estimate
• Track monthly and lifetime stats to see your progress over time
• Apple Watch support — track from your wrist, hands-free
• Zone 2 heart rate tracking for fat-burni...
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