Luen

iPhone / Forme et santé

Luen connects to Apple Health and shows you what actually moves the needle on the two metrics that matter most: VO2 Max and Resting Heart Rate.

No guesswork. No generic advice. Luen analyzes your personal data to find which habits — workouts, sleep, daylight, stress management — are linked to real improvements in your fitness.

WHAT LUEN DOES
• Tracks your VO2 Max and Resting Heart Rate progress with percentile rankings
• Sets personalized daily habit goals based on evidence from your own data
• Shows weekly consistency streaks and milestone targets
• Delivers insights like "Walking 200+ min/week raises your VO2 Max by ~0.3"

BUILT DIFFERENT
• All analysis happens on your iPhone — your data never leaves your device
• No account required. No social features. No ads.
• One-time purchase. No subscriptions.

Luen is for people who take their health seriously and want to understand what actually works — for them.

Requires iPhone with iOS 18+ and Apple Health data.