Healthspan Biomarker Tracker

A single lab result tells you where you are. A trend tells you where you're headed.

A single lab result establishes a baseline, but the trend across multiple tests over months or years is what actually reflects whether health-related interventions — diet, exercise, sleep, medication — are working, since a single value in isolation can't distinguish a stable healthy pattern from a slow decline that hasn't yet crossed a clinical threshold. This tracker logs five commonly discussed longevity-related biomarkers across test dates and computes a genuine trend direction for each, correctly accounting for the fact that a decreasing value is the improvement for markers like LDL and hs-CRP, while an increasing value is the improvement for VO2 max — a distinction a naive 'up is good' comparison would get backwards for most of these markers.

• →Computes a genuine trend indicator comparing each new result to the previous test
• →Correctly distinguishes improvement direction per marker (lower LDL is better, higher VO2 max is better)
• →Tracks HbA1c, LDL, hs-CRP, resting heart rate, and VO2 max across multiple dates
• →All data stored locally via localStorage — private health tracking, never uploaded
• →Watermarked by Cikal Studio Labs · Works on any device, no install required