This is the ultimate app for taking the screenshot of Snapchat without letting the other person know.
Just install the app and you're good to go.
Keep Screenshotting and enjoy the ad free version.
Grant the permissions asked by the app for it to work properly.
P.S. If any good soul is willing to design a nice icon and cover photo for my app, I'll be more than happy to that good soul. Please reach out to me on my email. :)