ZeroCal
Your body's data, finally making sense.
A WHOOP-inspired health dashboard powered by AI. Built for people who take their fitness seriously.
Everything your body needs you to know
ZeroCal surfaces the metrics that matter — beautifully, automatically.
Recovery Score
Know when to push and when to rest. A composite score from HRV, resting HR, and sleep quality — just like WHOOP.
Training Load
Track weekly volume, spot overtraining early. Compare this week vs last with a visual trend.
Heart Health
Resting heart rate, HRV trends, and VO₂ Max in one panel. 7-day sparklines for every metric.
Sleep Analysis
Total hours, deep sleep, REM, core stages. Scored out of 100 so you always know where you stand.
Macro & Calorie Engine
TDEE-based recommendations that adjust to your weight trend. Protein, carbs, fat — calculated from real biometric data.
AI Insights
Tap the sparkle button on any section to get a Claude AI analysis of your data — trends, flags, and one actionable recommendation.
Ready to understand your body?
Download ZeroCal and start turning your health data into clarity.
Available on Android devices.