CHRONOGRAPH
Chronic pain tracker

Daily check‑in

NoneWorst
+ Add a custom factor to track

Common ones — one tap to add:

Or add your own, with whatever range makes sense for it:

Current mood

LowBaselineHigh
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Mood over time

Recent entries ()

Your log

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Not enough data yet

How each factor affects your pain

FactorEffectImpact / SDStrengthrConf.

Proof

honest hedging
regression R²
forest R² (out‑of‑bag)
days analysed

Pattern structure (PCA)

How your habits cluster, and how much of the day‑to‑day variation a few patterns capture.

What do these columns mean?

Effect: whether more of this factor tends to raise or lower pain, from a multi‑factor regression (controls for the others).
Impact / SD: pain points (0–10 scale) change for a 1 standard‑deviation change in the factor — a fair way to compare units.
Strength: random‑forest permutation importance — how much the model relies on this factor, capturing non‑linear effects.
r: simple pairwise correlation with pain.
Conf.: our confidence, blending statistical significance, agreement between models, forest importance and how much data you have.

How "Delayed effects" works

Same‑day analysis misses anything that hits with a delay (post‑exertional crashes, migraine build‑up). A separate pass checks each factor a few days back, after controlling for your own recent trend, so a slow drift isn't mistaken for a driver. A confound note appears when two factors move together closely enough that we can't confidently credit one over the other from observation alone.

Not enough data yet

Log ~15 days to unlock experiments.

Medications

tracked, never auto-tested
+ Add a medication

Adherence

Cycle tracker

any condition

logged   predicted next — tap a day to log or remove

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