Snapchat always alerts someone when you screenshot their Snap, but there are ways you can get around that.
To see who added you on Snapchat, open your "Added Me" list via the Snapchat home screen, or tap on your Friends list.
One way is to go to the “Add Friends” page. Here, scroll down to the Quick Add section, and you can see that Snapchat will suggest users here and often shows an approximate number like “3+ Mutual ...
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