Symptom tracking calibrated to
you.

Pick how you measure each symptom (severity, count, duration, or presence) and day by day, your entries become trends calibrated to your scale.

What to Expect

Everything you need to track how you feel. Nothing you don’t.

SymDay is built around a simple daily ritual: log your symptoms, add context, and let the data do the talking over time.

Your scale, not someone else’s
Not everyone’s 7 out of 10 means the same thing. Pick how to measure each symptom—severity bands, count, duration, or simple yes/no—with thresholds defined by your experience, not someone else’s.
Trends calibrated to you
A single entry doesn’t tell you much, but weeks of them normalized to your scale? Now we’re onto something. Watch what’s shifting, what’s holding steady, and what tags keep showing up on the rough days.
Track only what matters
Add the symptoms you experience: headaches, fatigue, nausea, anything else. Skip what you don’t. Reorder by priority, hide what you’ve stopped tracking.
Notes and tags for context
Capture what numbers can’t. Free-text notes with tags like #coffee or #poorslept give you the story behind the data and the dots to connect later.
Built to be a daily habit
Day by day, your entries add up. The Today view is designed to be quick enough that the habit sticks, even on hard days.
Browse what you’ve logged
Step through past entries day by day. The Overview shows your symptom history across recent weeks. It’s the context behind the trends.

Three steps. That’s it.

SymDay is as simple as keeping a daily journal but structured enough to be useful over time.

Set up your symptoms
Add the symptoms you want to track and choose how to measure each one—severity scale, count, duration, or simple yes/no presence.
Log every day
Open the Today view, update your symptoms, drop in any notes or tags, and save. The whole thing takes a few minutes.
Watch the patterns emerge
Browse the Overview to see how your symptoms shift over days and weeks. Your entries are normalized to your scale, so the trends mean something to you and to anyone you choose to show them to.

Let someday be today.

Set up your symptoms, define your scale, and start logging how you feel.