About this app
Cats are experts at hiding discomfort. Sylvester gives you a way to check in. Using a simple photo of your cat's face, get comfort insight in seconds built on validated feline pain science. Why cat caregivers use Sylvester: → One photo, instant comfort insight → Built on validated pain scales used in clinical and research settings worldwide → Track comfort over time and notice changes sooner → Share results with your veterinarian for more informed conversations → Over 20,000 cats on the platform How it works: 1. Take a clear, front-facing photo of your cat's face 2. Receive a comfort insight within seconds 3. Follow your cat's comfort history over time Important: Sylvester is a support tool, not a diagnosis. If you're concerned about your cat's health, please contact a veterinarian. Photo quality matters — good lighting and a fully visible face give the best results. Some breeds or life stages (such as kittens) may not be supported. Terms of Use: https://www.sylvester.ai/terms Privacy Policy: https://www.sylvester.ai/privacy-policy
Latest release
What’s New
Bug fixes to make cats happier.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 4, 2026 · 7:24 AM Free
Screenshots
