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What’s New Version 1.0.21
We fixed a couple of bugs and improved onboarding for users redeeming special offers.
Description
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
Capabilities
In-App Purchases
Accessibility
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Version history 18 versions
Build 888068809v1.0.212026-07-09 20:30:42
We fixed a couple of bugs and improved onboarding for users redeeming special offers.
Build 887906216v1.0.202026-07-07 11:42:03
Sylvester is smoother from first setup to first Comfort Check. The latest update brings clearer camera guidance for iOS users (Android coming soon!), easier onboarding, improved sign-up, and a cleaner path for users coming from our Partner Clinics.
Build 887160661v1.0.192026-06-19 22:31:48
New in this update: refreshed Home, My Cats, Cat Profile, camera, and results experiences; new Comfort Trends insights; clearer Comfort Check language; smoother sign-up and cat setup flows; plus reliability improvements throughout.
Build 886442570v1.0.182026-06-03 14:57:28
Big Fixes and Improvements
Build 886024856v1.0.162026-05-25 14:02:45
Big Fixes and Improvements
Build 885823736v1.0.152026-05-19 02:30:48
Minor improvements and bug fixes.
Build 884810382v1.0.122026-04-27 04:59:02
Comfort tracking improvements and bug fixes.
Build 884982380v1.0.132026-04-27 22:29:42
Comfort tracking improvements and bug fixes.
Build 884746054v1.0.112026-04-22 04:42:44
Bug fixes
Build 884557361v1.0.102026-04-20 08:45:24
Bug fixes
Build 882868557v1.0.92026-03-02 07:41:42
Bug Fix
Build 882775472v1.0.82026-02-26 10:19:28
Updates have been made to the app’s intro pages.
A password requirement suggestion has been added.
The “Don’t Agree” feature has been removed from the app.
The weight field has been updated — users can now enter the cat’s weight in either kilograms (kg) or pounds (lbs). If a user enters the weight in kg and switches to lbs, it will automatically convert.
The cat’s age will now be calculated based on the calendar and displayed only in years.
Build 880438178v1.0.52025-12-09 07:52:11
App enhancement and bug fixes
Build 880388631v1.0.42025-12-08 07:59:53
App enhancement and bug fixes
Build 880134774v1.0.32025-11-28 19:35:20
App enhancement and bug fixes
Build 879833755v1.0.22025-11-21 13:41:25
App Enhancement
Build 879183164v1.0.12025-11-07 09:35:54
App Enhancement
Build 878433950v1.02025-10-23 12:04:50
No pricing data captured yet — comparisons appear once the app has paid storefronts or in-app purchases.
Availability 1 of 1 storefronts
| Region | Language | Price | Ratings | Avg | Version |
|---|---|---|---|---|---|
| US | en-US | Free | 9 | 4.1 | 1.0.21 |
Change log 22 changes · US
✎
releaseNotes updated
We fixed a couple of bugs and improved onboarding for users redeeming special offers.
✎
description updated
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 v
✎
subtitle updated
One photo, instant insights.
✎
name updated
Sylvester: Cat Comfort Check
◆
Version 1.0.21 released
We fixed a couple of bugs and improved onboarding for users redeeming special offers.
◆
Version 1.0.20 released
Sylvester is smoother from first setup to first Comfort Check. The latest update brings clearer camera guidance for iOS users (Android coming soon!), easier onboarding, improved sign-up, and a cleaner path for users coming from our Partner
◆
Version 1.0.19 released
New in this update: refreshed Home, My Cats, Cat Profile, camera, and results experiences; new Comfort Trends insights; clearer Comfort Check language; smoother sign-up and cat setup flows; plus reliability improvements throughout.
◆
Version 1.0.18 released
Big Fixes and Improvements
◆
Version 1.0.16 released
Big Fixes and Improvements
◆
Version 1.0.15 released
Minor improvements and bug fixes.
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Version 1.0.13 released
Comfort tracking improvements and bug fixes.
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Version 1.0.12 released
Comfort tracking improvements and bug fixes.
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Version 1.0.11 released
Bug fixes
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Version 1.0.10 released
Bug fixes
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Version 1.0.9 released
Bug Fix
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Version 1.0.8 released
Updates have been made to the app’s intro pages.
A password requirement suggestion has been added.
The “Don’t Agree” feature has been removed from the app.
The weight field has been updated — users can now enter the cat’s weight in either k
◆
Version 1.0.5 released
App enhancement and bug fixes
◆
Version 1.0.4 released
App enhancement and bug fixes
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Version 1.0.3 released
App enhancement and bug fixes
◆
Version 1.0.2 released
App Enhancement
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Version 1.0.1 released
App Enhancement
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Version 1.0 released