Because feline pain is hard to spot

The Sylvester app helps you see what your cat can't tell you.

Run a Cat Comfort Check from a simple photo and get instant insight into your cat's comfort, backed by computer vision and recognized feline pain science.

So you can see more, and know sooner.

See what your cat can’t tell you

Cats are experts at hiding discomfort.

Sylvester removes the guesswork using patented computer vision and recognized feline pain science to translate your cat’s subtle facial cues into instant comfort insights.

Now it’s easier to stay in tune with your cat’s wellbeing so you can track changes over time and feel confident you'd notice if something was off.

Veterinary technician Amber LaRock uses the Sylvester Comfort Check to track her cat's comfort at home

Built Just for Cats

General AI tools look at everything on the web, but Sylvester is different. Sylvester is trained exclusively on highly specialized cat data through unique animal shelter partnerships, creating a reliable tracking tool built from the ground up specifically for your cat.

Our unique technology is officially patented, meaning it is a one-of-a-kind tool proven to read feline facial expressions that you can trust.

Science-Backed

You don't have to be a veterinary expert to use recognized feline pain science. Sylvester is built directly around validated veterinary research which proved that cats show comfort and discomfort through their facial expressions and posture.

The Sylvester app turns this complex scientific research into a simple, everyday tool that anyone can use right from their smartphone.

Snap. Check. Know.

Understanding your cat shouldn’t be complicated or difficult. Sylvester gives you an easy, low-stress way to check in on your cat’s daily wellbeing without any fuss.

Simply open the app, snap a quick photo during a calm moment, and get instant, objective comfort insights that help you stay in tune with their comfort over time with confidence.

What People Are Saying

“We are investing in sylvester.ai as a differentiator, but honestly, every clinic in town should be using it.” - Investor and Veterinary Clinic

I had no idea if I was taking proper care of my cat or not. When the app told me he was unhappy, I decided to take him to the vet and he was diagnosed with ear mites. ...Many thanks to sylvester.ai which provoked me to take my cat to the vet and therefore saved him a lot of pain." - Cat Caregiver

“I'm glad I used the app to check on my cat or I wouldn't have learned his ear infection was still present!” - Cat Caregiver

“This app saved my cat’s life.” - Cat Caregiver

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