Chronic illness.
Honestly tracked.
A dedicated space for migraine, POTS, EDS, Crohn's, endo, and 20 more chronic conditions. Log your symptoms, meds, and triggers in one place. See your own patterns over time. Bring the real story to your next appointment.
Built for the days you have the energy — and the days you don't.
⌘ a glance at what one day looks like
⌘ a glance at what one day looks like
What people living with chronic illness tell us.
Shared with permission · names kept private
If you're anything like me and occasionally forget your meds, Leo has been a lifesaver. It helps me track my POTS and other chronic illnesses, keeps me accountable, and makes appointments easier by having all my health information organized in one place.
Leo helps me remember my medications when brain fog makes remembering anything else impossible.
On my worst brain fog days, Leo makes sure I don't miss my meds.
Most health apps brag about AI. Leo doesn't. There is no AI in the app, and your data never gets fed to one. What you get instead: a sleek and serene app for both your mental and physical health, all in one place. You decide what to log. You share — only with the people you choose to. We don't read it. We don't sell it. No model sees it. It's yours.
One app, five points of view.
The same record looks different to the person living it, the parent watching over a kid, a caregiver helping out, a partner along for the ride, or a provider in a 15-minute visit. Tap into the role that fits you.
Track what's happening. See your own patterns. Bring the proof.
Doses that count, not buttons that beep.
Tap once when you take it. Mark missed, skipped, late, or partial — because real life doesn't always go to plan. PRN meds (the ones you take as needed) check in 30 minutes later so you can see if they actually worked.
See the full feature listA space for each of the 25.
Migraine. POTS. EDS. Gastroparesis. Endometriosis & Adenomyosis. Crohn's. Each one has its own space with the symptoms, triggers, and trends that matter for that specific condition. Use it for one — or for several at once.
See all 25The 'oh, that's why' moments.
Your migraines on Mondays. Your flares after the storm came through. Your mood the week before your period. Co-occurrences, cycle-phase clusters, and trends — all with a 95% confidence interval. Never a prediction or a prescription.
How the patterns workThree things, plainly true.
Your record never gets fed to a model.
No AI training, no AI analysis, no “smart insights” built on your logs. Your symptoms, meds, mood, and journal stay on your phone. We can't read them. We can't sell them. We can't hand them to a model.
See how it worksA small group of people can see — only what you let them.
Biometric lock on every open. Audit logs of every time something gets viewed. Built to HIPAA Security Rule standards; our agreement with Google Cloud is in progress.
Read the security pageEvery number has a source.
The prevalence stats on the conditions page are linked to CDC, NIH, WHO, foundation pages, or peer-reviewed papers. No made-up numbers. No hand-waved averages.
See the citationsLeo is in private beta.
We're adding conditions, listening to people who actually live with them, and shaping the app around what helps. If you live with one of the 25 — or care for someone who does — come help us get it right.