Pacing

Track resting heart rate, HRV, sleep, and exertion against your own baseline — for infection-associated chronic illness (ME/CFS, long COVID, and related post-exertional malaise conditions).

Your data never leaves this device. Everything you enter is stored only in this browser (localStorage). Nothing is sent to a server, logged, or analyzed anywhere else. Closing the tab does not delete it; clearing your browser's site data does. Export a copy any time you want a backup or a file to hand to a clinician.

Today's entry

Heart rate variability (HRV)

How exerted was the day before this reading — physically, cognitively, or emotionally?

Today, against your own baseline

Add at least a few days of entries to see deviation scores here.

History

No entries yet.

Your data

Export a JSON copy any time. The exported file's observations array is the same record shape the paid pacing agent API and a clinician's tools expect, so you can hand it anywhere without re-entering anything.

What this app is, and is not

Every number here describes how today compares to your own recent history — never a population norm, and never a diagnosis. Nothing this app shows predicts, confirms, or diagnoses post-exertional malaise; it flags conservative deviations from your own baseline and tells you, in plain language, what evidence stands behind each flag.

The math is published and open — you can read exactly how every number is computed and what its evidence status is, unlike the closed scoring formulas most pacing apps ship.