Symptom tracking calibrated to
you.

Log symptoms in a few minutes each day. Entries become trends on your own scale.

What to Expect

Track symptoms your way.

Your own scale
Choose how to measure each symptom: severity, count, duration, or presence. Define your thresholds for severity and set a max for count and duration.
Quick daily log
The Daily log takes a few minutes and is easy enough for hard days. Enter a number or use a slider, increase/decrease buttons, or a toggle.
Notes and tags
Add notes with tags like #coffee or #poorslept. Connect the dots later when you review your trends.
Trends at a glance
The Overview shows how your symptoms change over weeks. Exact numbers are there if you want them, but trends come first. Filter by tag or presence symptom to see what shows up on rough days.
Private, no AI
Your data is yours. We never sell it, share it, or send it to AI models. Export, edit, or delete it any time.
Nothing to install
Open SymDay in your browser on your phone, tablet, or computer. No app store. No updates.

Three steps. That’s it.

Set up your symptoms
Add the symptoms you want to track and choose how to measure each one.
Log every day
Spend a few minutes on the Daily log. Update your symptoms, add notes or tags, and save.
Review your trends
Use the Overview to learn how your symptoms change over weeks and explore tags that play a part.

Let someday be today.

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

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