Yes, Snapchat shows the list of people who have viewed your story. However, there are some privacy settings you can adjust. For example, you can make your story viewable only by specific friends or set it to private so that only you can see it. But in general, if someone has a public story and you view it, they can see that you've viewed it.
On most social media platforms, no. For example, on Instagram, when you view someone's story, they generally can't see that it was you specifically who looked at it. However, some platforms may have certain privacy features or analytics that could potentially give the creator some idea about the general audience viewing their story, but not the individual identities in a straightforward way.
Snapchat is all about sharing moments that disappear. When it comes to snapping someone's story, Snapchat doesn't have a built - in feature to alert the story creator that you've taken a screenshot. This is different from some other social media platforms. So, in short, no, people can't see if you ss their snap story. But this also means we should be responsible with what we do with the content we screenshot, as it's not always meant to be saved or shared without permission.
Well, on Snapchat, the functionality is such that when it comes to Snap Stories, the person who posted it won't get any notification if you replay it. It's different from normal snaps in your chat, where replay might be restricted or the sender could be notified in some cases. But for Snap Stories, it's a more public - viewing kind of thing and there's no such 'replay detection' for the story creator.