Symptoms
Type, severity, how long it lasted, when it happened and a note, so entries are easy to compare.
Free chronic illness symptom tracker
Log symptoms, flares, medication and triggers here in your browser, or tell the Juno app how you feel by voice or text. Either way, you get a clear summary to take to your doctor.
Juno is a free symptom tracker app for iOS and Android. It keeps your symptom history alongside sleep, medication, energy and daily activities, so you have more than scattered notes to discuss with your clinician.
Juno uses AI and can make mistakes. Review entries and summaries before sharing them. It does not diagnose or treat conditions and does not replace your clinician.
Free symptom tracker
Log how you feel in a few taps, then print a summary for your doctor.
Your entries
This browser is not letting the page store anything, so entries will be gone when you leave. Download the CSV to keep them.
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Prefer to just talk? In the Juno app you say how you feel and it logs it for you.
What is a chronic illness symptom tracker?
A chronic illness symptom tracker is a log of how you feel over time: which symptoms, how bad, when they started and how long they lasted, next to the things that might explain them, such as sleep, activity, food, stress, your cycle and medication. Over weeks it shows patterns a single appointment cannot, like a crash two days after a busy day or a flare that follows poor sleep.
It does not have to be complicated. One entry a day, plus a note when something changes, is enough to start. Some people also track energy with a spoon budget, or heart rate on standing with an at-home standing test for POTS. See all our free trackers.
From symptom notes to an appointment summary
Describe what changed in your own words, then review your history over time. Before an appointment, prepare a PDF summary and check that it reflects what you want to discuss. Juno keeps medical knowledge and your own history separate, so you can see what came from you.
See an example appointment report using fictional data, or read the guide to voice and text symptom logging.
Comparing apps? Read our guide to the best symptom tracker apps for chronic illness.
Four ways to track symptoms, compared
Pick the one you will keep using on a bad day. Many people start on paper or here, then move to the app.
| Free online tracker | Juno app | Printable worksheet | Notes app or journal | |
|---|---|---|---|---|
| Cost | Free, no account | Free to download, optional paid plan | Free | Free |
| How you log | A few taps: symptom, 0 to 10, triggers, notes | Say or type how you feel; Juno logs it | Pen and paper | Free text |
| Context | Possible triggers and notes | Sleep, medication, energy, cycle and wearable data | Sleep, activity and stress columns | Whatever you remember to write |
| For your doctor | Print a summary or download a CSV | A PDF report from your history | Bring the sheet | Rebuild it yourself |
| Best for | Starting today | Tracking over months, and on low-energy days | Days away from screens | Quick notes |
What to record
Symptoms rarely happen in isolation. A useful tracker keeps the surrounding context, so patterns are easier to discuss with your clinician.
Flares
When a flare started, what came before it, what it stopped you doing, how long it took to recover and what helped.
Triggers
Symptom spikes next to sleep, stress, food, exertion, weather, hormones, travel and medication timing.
Medication
Timing, missed doses, side effects and whether it helps, in one place you can review.
Pain
Where it is, how strong, what it feels like, what sets it off, what relieves it, and what it stops you doing.
Fatigue and energy
Energy, exertion, rest, crashes and recovery, so pacing decisions get clearer.
Sleep
When you slept, how well, wake-ups, and how the next day felt.
Mood
Mood next to sleep, stress, symptoms and energy, so emotional patterns have context.
Who this helps
- People with complex or multi-system symptoms
- People working toward a diagnosis or a change of treatment
- Anyone who needs a doctor-ready summary instead of scattered notes
How to use it
- Log a symptom change with how bad it was, how long it lasted and what it stopped you doing.
- Add the context: sleep, stress, exertion, food, treatments and medication timing.
- Mark flares separately from your baseline symptoms.
- Before an appointment, review the timeline and turn it into a short summary.
Prefer paper?
See all
What to track for your condition
The same tracker works for any condition. These guides cover what tends to matter for each one.
- POTS symptom tracker: dizziness on standing, standing heart rate, fluids and salt, or try the at-home standing test.
- ME/CFS symptom tracker: energy, post-exertional malaise and rest, with a spoon budget.
- Long COVID symptom tracker: fatigue, brain fog, breathlessness and crashes.
- Fibromyalgia symptom tracker: pain, fatigue, sleep and fibro fog.
- EDS symptoms: subluxations, pain, fatigue and dizziness.
- MCAS symptom tracker: flushing, hives, gut symptoms and possible triggers, or keep an MCAS symptom diary.
- Lupus symptom tracker: fatigue, joint pain, rashes and sun exposure.
- Arthritis symptom tracker: joint pain, morning stiffness and swelling.
- Psoriatic arthritis tracker: joint pain, skin flares and swollen fingers or toes.
- Ankylosing spondylitis tracker: back pain, morning stiffness and fatigue.
- Endometriosis symptom tracker: pelvic pain across your cycle, bleeding, and bowel and bladder symptoms.
- PCOS symptom tracker: your cycle, skin, weight and mood.
- Migraine tracker: attacks, aura, pain and possible triggers.
- Chronic pain tracker: where it hurts, how much, what sets it off and what helps.
- CRPS symptom tracker: pain, sensitivity to touch, swelling and temperature changes.
- IBS symptom tracker: gut pain, bowel habits, food and stress.
- Crohn’s disease tracker: bowel habits, abdominal pain, blood and urgency.
- Ulcerative colitis tracker: bowel frequency, blood, urgency and night-time symptoms.
- Gastroparesis symptom tracker: nausea, early fullness and what you ate.
- MS symptom tracker: fatigue, numbness, balance and vision.
- Hashimoto’s thyroiditis: fatigue, feeling cold, weight and brain fog.
- Sjögren’s symptom tracker: dry eyes, dry mouth, fatigue and joint pain.
Questions
What is the best symptom tracker app for chronic illness?
The best one is the one you keep using on a bad day. Look for quick logging, room for context such as sleep, medication and triggers, and a summary you can share with your doctor. Juno lets you log by voice or text. Our comparison of symptom tracker apps covers Bearable, Visible, Guava and others.
Is there a free symptom tracker app?
Yes. Juno is free to download. Symptom tracking is available without a paid membership. Free AI conversations are limited; check the app for current plan details. The online tracker on this page is free too, with no account.
How do I track chronic illness symptoms?
Note the symptom, how bad it is from 0 to 10, when it started and how long it lasted, then add context: sleep, activity, food, stress, medication and your cycle. Short entries close to the moment are worth more than a perfect record rebuilt from memory. Our guide to tracking without making it a full-time job has more.
How often should I track my symptoms?
Once a day is enough for most people, plus an entry when something changes, a flare starts or a treatment changes. A gap is a gap, not a failed day.
Can I show my symptom tracker to my doctor?
Yes. The online tracker prints a one-page summary or downloads a CSV, and the Juno app turns your history into a PDF report. Check that it reflects what you want to discuss before you share it. Seeing someone new? Read how to present your case to a specialist.
Can a symptom tracker help with diagnosis?
It cannot diagnose you. It can make appointments clearer by showing patterns, timing, triggers and impact in a way that is easier to discuss with a clinician.
Can I track medication and symptoms together?
Yes. Log medication timing, missed doses and side effects next to your symptoms, so you can see whether changes line up. It helps you and your doctor tell a flare from a side effect.
Why not just use a notes app?
You can. A notes app is quick, but entries stay disconnected and you rebuild the story before every appointment. Juno keeps what you tell her as part of your history, so entries turn into patterns and summaries.
Where does the free symptom tracker keep my entries?
Only in this browser, on this device. Nothing is sent to Juno and there is no account. Clearing your browser data deletes them, so print a summary or download the CSV if you want a copy.
Juno, your 24/7 health assistant
- Free to download
- Syncs with 20+ wearables
- Doctor-ready summaries
Free to download. Juno is a health assistant, not a medical provider, and never replaces advice from your own clinician.