Apple Watch series 3 watch os6-Noise app missing

It says it’s compatible for my series 3 but apparently it’s not. Only 4 and 5 from what this discussion is saying

Why would it not be available on all? It’s in the App Store and shows it was on my watch, but states you have to restore the app from a iPhone with iOS 10 or later, when you re-download it ? Please explain?

The Noise app is only available on the Series 4 and newer.

Read this........https://9to5mac.com/2019/06/16/watchos-6-noise-app/

Thank you. Clarified something that appears to be undocumented.

I have no idea why it wouldn’t be on all Watch models- only Apple know that. But it is only on the Series 4 and newer. iOS 10 has nothing to do with the app.