Seizure and medication tracking for pets

When the moment passes, log the details

Leu keeps seizure events, medication schedules, and your pet's important details all in one place

Coming soon to theApp StoreSee how it works

For recordkeeping only. Leu does not replace emergency or veterinary care.

Leu Overview showing a pet profile, quick logging actions, and recent seizure information

After a seizure, Leu is there when you're ready

When things calm down, Leu helps you log what happened

Capture the time, duration, and any other details about a seizure. Leu keeps it all together for when you need the full story.

Your pet's care, organized

Seizures and medications. Together in one app.

Move between your pet's overview, seizure history, and medications without piecing information together across notes, calendars, or memory.

Leu Seizures screen in Dark Mode
Leu Overview screen in Light Mode
Leu Medication Center in Dark Mode

Seizure history

Capture the event after it ends.

Record when a seizure happened, how long it lasted, and the context you want to remember. Leu keeps each entry in a simple chronological history.

Timing · Duration · Notes
Leu Seizures screen with a recent event and its recorded details

Medication rhythm

Built for your routine.

Track scheduled and as-needed medications, see what's due, and record what was actually given. Leu supports the rhythm of daily care without turning it into a streak or score.

Schedules · Reminders
Leu Medication Center showing active medications in Dark Mode

Ready to revisit

Your pet's history, ready when you need it.

At your next vet appointment, review dated seizure events and medication doses without trying to reconstruct weeks or months from memory.

Leu History with All events selected, showing seizures and medication doses by date
Aleu Overview with the Owner role
The same Aleu Overview with the Collaborator role in Dark Mode

Shared care, with those you trust

Different caregivers. One shared history.

Share each pet through iCloud. Each caregiver can contribute to the same history, with attribution showing who logged the event.

Privacy and Trust

Leu has no ads, no cross-app tracking, and no third-party analytics. History stays on your device and, when you enable sync or sharing, in your iCloud account through Apple CloudKit.

Read Leu's privacy policy

Named for the dog who started it all

Leu was built for her

Leu the Shiba Inu sitting outdoors

At 13 months old, she had her first seizure. Over the next 15 months, caring for her became a daily exercise in precision: medications, dosing schedules, symptoms, notes, and the ongoing challenge of knowing which details mattered.

We needed to give her the right medication, at the right dose, at the right time—twice a day, every day. We also needed a reliable way to record what we were seeing and share a clear picture of her health with her veterinary team.

So we built Leu.

What began as a tool for managing her care has grown into an app for keeping medications, seizures, notes, and missed doses in one place. Leu helps pet parents keep a clear record they can review and share with their veterinarian.

Today, our crazy, goofy Shiba is more than 200 days seizure-free.

Leu was built for her, but it’s for anyone caring for a pet with ongoing or complex health needs. Because when your pet needs a little more, having the right information at the right time can make their care—and your life—feel a little more manageable.

Leu lying on her back with her paws in the air
Leu app icon

Leu for iPhone

One place for the details that matter.

Coming soon to theApp Store