Migraine Tracker and Headache Diary | Attack Log, Aura & Trigger Finder, Med Tracker, Doctor Visit Summary | Works Offline, No Subscription

Works offline, no subscription, and your data never leaves your device. One file. No account. No app store.

See your patterns, not just your pain. Log symptoms in 30 seconds a day and walk into your next appointment with a one-page summary your doctor can actually use.

Flare Tracker is a private attack, symptom and pattern tracker built for migraine — log attacks, aura, light and sound sensitivity, triggers and what helped — with presets for POTS, MCAS, endometriosis, IBS/Crohn's and fibromyalgia too. It runs in the browser you already have (Chrome, Safari, Edge, Firefox) straight from a single HTML file. Double-click it and you're tracking. Settings → Condition preset → Migraine is pre-selected in the sample data; switch any time.

WHAT IT DOES

• DASHBOARD — six live numbers (30-day average severity, flares, medication adherence, days logged, average sleep, logging streak), a 90-day symptom heatmap, flares-per-month chart, severity trend with 7-day average, your top suspected triggers ranked by how much more often they show up before a flare, today's medication check-off, and your next appointment with open questions.
• DAILY LOG — 0–10 sliders for each symptom (you choose the list), sleep hours and quality, resting HR, blood pressure, hydration, stress, weather, plus triggers, foods and activities as quick tags. One entry per day, editable any time.
• FLARES — start, end (or "ongoing"), duration, peak severity, dominant symptoms, suspected triggers, what helped.
• MEDICATIONS — scheduled meds and supplements by time of day, or as-needed (PRN). Tick doses off on the dashboard, see a 7-day dose grid and 7/30-day adherence.
• APPOINTMENTS — providers, a running list of questions to ask (tick them off when answered), and outcome notes.
• PATTERNS — a trigger × symptom table (red = worse on days with that trigger, green = better), the same for foods and activities, sleep vs. next-day severity, and average severity by weekday.
• DOCTOR SUMMARY — one button prints the last 90 days on 1–2 pages: key stats, most severe symptoms, every flare, suspected triggers, current medications and the questions you've been saving up. Save as PDF or print.
• SETTINGS — condition presets, fully editable symptom list and tag suggestions, light/dark mode, 8 accent colors, US/EU/ISO date formats, ml or oz, large-text mode, and backup tools.

Sortable, searchable tables. Works smoothly with thousands of entries. Prints cleanly from any tab.

WHAT'S INCLUDED

• index.html — the entire app in one file (about 130 KB)
• README.html and Quick-Start.pdf — how to open it on every device, where your data lives, how to back up, FAQ
• Start-Here.txt
• Sample data you can load to explore, then clear with one click
• Free updates: new versions migrate your existing data automatically

HOW TO OPEN IT

Windows / Mac / Linux: unzip, move index.html somewhere permanent (e.g. Documents › Flare Tracker), double-click it. Bookmark the tab.
iPad / iPhone: save index.html into the Files app (iCloud Drive works well), tap it, then Share → Open in Safari → Add to Home Screen.
Android: save the file, open it with Chrome from the Files app, add to Home screen from Chrome's menu.
Always open it from the same file in the same browser — that's where your data is stored.

BACKUPS (please read)

Everything you enter is saved automatically to your browser's local storage on your device. Nothing is uploaded, ever — which also means clearing browser data would erase it. Use Settings → Export JSON backup regularly (weekly is plenty) and keep the file somewhere synced. Import restores it, or moves everything to a new device. You can also export every table to CSV for Excel or Google Sheets.

FAQ

Q: Does it really work offline?
A: Completely. It makes zero network requests. Turn Wi-Fi off and it works exactly the same.

Q: Will it work on my iPad or phone?
A: Yes — open the file from the Files app on iPhone/iPad, or with Chrome on Android. The layout adapts to the screen. Data is stored per device; use export/import to move it.

Q: What if I clear my browser data?
A: Your entries would be deleted, which is why the app reminds you to export a backup. Import the backup and you're back where you were.

Q: Can I customise the symptoms?
A: Yes. Pick a condition preset, then add, rename, reorder or remove any symptom. Trigger, food and activity suggestions are editable too, and you can type any new tag on the fly.

Q: Is this an app-store app or a subscription?
A: Neither. It's a one-time download you own. No account, no monthly fee, no updates that lock you out.

Q: Can I use it for more than one condition?
A: Yes — presets add symptoms, they never remove them, so you can combine lists (e.g. POTS + MCAS) into one tracker.

NOT MEDICAL ADVICE

Flare Tracker is a personal record-keeping tool. It does not diagnose or treat anything and does not replace care from your clinician. The trigger and pattern views are simple statistics on the data you enter — bring them to your doctor as a conversation starter, not a conclusion.

This is a digital download; no physical item will be shipped. Because it's digital, refunds aren't available — but if anything doesn't work, message me and I'll get you sorted.

If this helps you get a better handle on your health, a quick review would mean a lot — it's how small shops like this one get found. Reviewers get the next update free.