Retention · industry benchmark
73%
of migraine app users quit by week 4 — because logging during an attack is impossible. Penumbra was built to be the exception.
Source · industry benchmark · 2024
Penumbra is the headache tracking app built for migraineurs by migraineurs. Log attacks with your voice. Track your triggers all in one view. Walk into your next neurologist appointment prepared.
The gap between what apps ask you to do and what you can actually do during an attack is the whole problem. Penumbra exists because that gap shouldn’t.

Your eyes are closed. Your head is splitting. The last thing you can do is tap a screen.

You walk into your neurologist’s office with fragments. Dates blur. Triggers vanish. Nothing changes.

Your worst attacks happen on the same days every month. You know it, just can’t prove it.
Understanding your own condition is a right, not a feature. Penumbra is the migraine tracker built for the inside of an attack and the appointment that follows it.


The most upvoted post in r/migraine’s history asked one question: why does logging an attack require ten questions? Penumbra doesn’t. Press one button and describe your attack — that’s it. No dropdowns. No screen brightness required. Penumbra will do the hard part for you.
Log your first attack →
Your cycle phase overlays directly on your attack timeline. The AI surfaces the correlation in plain language, then includes it in your neurologist document in clinical framing.
Find the connection →
Penumbra helps you recognize your aura surges faster and warns you when a migraine attack is about to happen.
Get started

After your first few attacks, Penumbra’s AI begins connecting variables across your timeline. Sleep, cycle phase, weather, medication timing. Insight cards help you understand what drives your attacks worse.
Explore →

Your neurologist sees you once a year. Let’s make sure that hour counts. Forty-eight hours before you see your neurologist, Penumbra generates a report from your logs — all your patterns framed in clinical language your doctor understands.
Try Penumbra →
Penumbra tracks acute-use days and warns you well before you cross the threshold for medication-overuse headache — the single biggest driver of episodic migraine becoming chronic.
Learn more →
Penumbra watches the local pressure trace and pings you when a drop crosses the threshold your own data says matters — usually four to twenty-four hours of warning.
Learn more →
The most upvoted post in r/migraine’s history asked one question: why does logging an attack require ten questions? Penumbra doesn’t. Press one button and describe your attack, that’s it.
You say: “Migraine started around 2am, intensity 8, light sensitivity.” Penumbra structures it, timestamps it, and adds it to your timeline.
No dropdowns. No screen brightness required. No extra steps. Penumbra will do the hard part for you.
Your cycle phase overlays directly on your attack timeline. The AI surfaces the correlation in plain language, then includes it in your neurologist document in clinical framing.
Data flows in from period trackers without you lifting a finger.
The AI connects your worst days to your cycle phase almost immediately.
After your first few attacks, Penumbra’s AI begins connecting variables across your timeline. Sleep, cycle phase, weather, medication timing. Insight cards help you understand what drives your attacks worse.
The AI doesn’t isolate single triggers. It finds the combinations that matter.
You see which days ahead carry the highest attack probability based on your actual data.
Your neurologist sees you once a year. Let’s make sure that hour counts. Forty-eight hours before you see your neurologist, Penumbra generates a report from your logs. All your patterns are there, framed in clinical language your doctor understands. You don’t walk in empty-handed anymore.
Your report arrives as a PDF before your appointment, ready to send or hand over.
MIDAS and HIT-6 scores. Timeline. Medication log. Pattern summary. All clinical framing included.
Attacks. Cycle. Sleep. Barometric pressure. They all live on the same timeline now.
Retention · industry benchmark
73%
of migraine app users quit by week 4 — because logging during an attack is impossible. Penumbra was built to be the exception.
Source · industry benchmark · 2024
Speak. Don't tap.
MIDAS & HIT-6 included.
Productivity lost
4days
lost per month on average by people with chronic migraine.
Demographics
85%
of chronic migraine sufferers are women.
Clinical scoring, automatically.
Know before you overuse.
Smart watches, rings, and others.
I’ve been tracking my cycle and migraines separately for six years. Seeing them on the same timeline took two weeks to confirm what I’ve suspected the whole time.
Chronic migraine sufferer
I sent my neurologist the PDF before my appointment. She said it was the most complete data she’d ever seen from a patient. We changed my treatment plan in that one visit.
Newly diagnosed
I needed Botox approval and I had nothing to show for it — just a vague sense that my attacks were getting worse. Six weeks with Penumbra and I walked in with a PDF, a MIDAS score, and a documented frequency that my neurologist could actually act on. We changed my protocol in that appointment. I’d been waiting two years for that conversation.
CGRP preventive user
My neurologist told me to keep a headache diary before my first appointment and I genuinely didn’t know where to start. I tried Notes, I tried a spreadsheet, I gave up twice. Then I found Penumbra and just… spoke three words when an attack started. By the time my appointment came around I had six weeks of structured data I didn’t even know I was building.
Episodic migraine sufferer
I’ve tried over 10 apps. I always quit around the three-week mark because logging during an attack is just not possible with those interfaces. Penumbra is the first app that seems to understand that the worst moment to open an app is exactly when you need to log. I’m at four months now. That’s never happened before.
Chronic migraine sufferer

Press record. Describe what’s happening. Penumbra listens and converts everything into a detailed log.

Penumbra connects sleep, cycle, weather, and medication across weeks. On day 14, you’ll get your first insights.

Compile your logs into a PDF on request. Hand your neurologist a complete picture.
Start free. Upgrade when patterns arrive. Pay for what’s actually useful.
Download Penumbra on iOS or Android. No credit card required.