Sylvester: Cat Comfort Check

Name: Sylvester: Cat Comfort Check
Rating: 4.1 (9 reviews)
Author: Sylvester.ai

One photo, instant insights.

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

9 Ratings
Age Rating

13+
Years
Category

Health & Fitness
Developer

Sylvester.ai
Language

EN
English
Size

72.7
MB

iPhone

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

Ratings & Reviews

4.1

out of 5

9 Ratings

An amazing tool to help support your cat’s health
Mar 18
Reugerlovesgames
I recently tried Sylvester AI using a photo of my cat, Meep, taken about a month before we had to say goodbye. The platform indicated it was 98% confident she wasn’t doing well. Honestly, that brought me a lot of comfort.At the time, making that decision was incredibly hard, but seeing that insight helped reassure me that we did the right thing for her. While no tool can replace veterinary care, this felt like a supportive, validating second perspective.I’d recommend Sylvester AI to any cat owner who wants an additional layer of understanding about their pet’s wellbeing.
An amazing tool to help support your cat’s health
Mar 18
Reugerlovesgames

I recently tried Sylvester AI using a photo of my cat, Meep, taken about a month before we had to say goodbye. The platform indicated it was 98% confident she wasn’t doing well. Honestly, that brought me a lot of comfort.At the time, making that decision was incredibly hard, but seeing that insight helped reassure me that we did the right thing for her. While no tool can replace veterinary care, this felt like a supportive, validating second perspective.I’d recommend Sylvester AI to any cat owner who wants an additional layer of understanding about their pet’s wellbeing.
Post Surgical pain management
Feb 13
CleeBee14
I loved using this App to help me determine how my 2 cats were feeling after their neuters. I was able to follow them with daily scans through their recovery and discover when they returned to their baseline mood. This tool is so unique. I would recommend it to anyone who has a pet go through surgery to monitor their mood post op!
Post Surgical pain management
Feb 13
CleeBee14

I loved using this App to help me determine how my 2 cats were feeling after their neuters. I was able to follow them with daily scans through their recovery and discover when they returned to their baseline mood. This tool is so unique. I would recommend it to anyone who has a pet go through surgery to monitor their mood post op!
At-home cat scan
Apr 28
ScoutRCats
Love this simple to use app. It’s an added signal to measure my cat’s wellbeing. I uploaded photos of my since passed cats in the final weeks and it confirms they were uncomfortable.
At-home cat scan
Apr 28
ScoutRCats

Love this simple to use app. It’s an added signal to measure my cat’s wellbeing. I uploaded photos of my since passed cats in the final weeks and it confirms they were uncomfortable.
Can’t access & they refuse to refund
12/22/2025
Ladida5
I bought the 1 year subscription but couldn’t login after creating my account. I contacted their support weekly for about a month and kept being told “waiting for tech” to respond. I finally just requested a refund and still was told to wait for tech. No refund. Can’t use the app. No response other than wait for tech. Seems like a scam or poorly run business.

Developer Response
Thanks for writing in, and we are sorry for the frustration here. We are a small team and this sounds like a login issue that took longer than it should have to resolve.We are a real, actively supported app and do process refunds when requested. Please email support@sylvester.ai again with the email used to purchase and mention this review so we can locate your account and help resolve it.
Can’t access & they refuse to refund
12/22/2025
Ladida5

I bought the 1 year subscription but couldn’t login after creating my account. I contacted their support weekly for about a month and kept being told “waiting for tech” to respond. I finally just requested a refund and still was told to wait for tech. No refund. Can’t use the app. No response other than wait for tech. Seems like a scam or poorly run business.
Developer Response Jan 9
Thanks for writing in, and we are sorry for the frustration here. We are a small team and this sounds like a login issue that took longer than it should have to resolve.We are a real, actively supported app and do process refunds when requested. Please email support@sylvester.ai again with the email used to purchase and mention this review so we can locate your account and help resolve it.

Bug fixes to make cats happier.

Version 1.0.26 Aug 31

Data Linked to You

The following data may be collected and linked to your identity:
- Contact Info

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

Information

Seller: SYLVESTER.AI INC
Size: 72.7 MB
Category: Health & Fitness
Compatibility: Requires iOS 13.0 or later.

iPhone
Requires iOS 13.0 or later.

iPod touch
Requires iOS 13.0 or later.

Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.

Apple Vision
Requires visionOS 1.0 or later.
Languages: English
Age Rating: 13+

13+

Learn More
In-App Purchases: Yes

Purr $9.99

Purr $7.99

Roar $59.99

Roar $47.99

Learn More

Developer Website

Privacy Policy

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Sylvester: Cat Comfort Check

Ratings & Reviews

An amazing tool to help support your cat’s health

Post Surgical pain management

At-home cat scan

Can’t access & they refuse to refund

What’s New

App Privacy

Data Linked to You

Accessibility

Information

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