I want people to add me on the social app Snapchat. What should I write in the caption? Should I give my username on Facebook and say "Add me up"?
What's the difference between "Add me" and "Add me up" and which one is the correct one?
I would say "Please add me as a Snapchat friend." Another option that is very slightly awkward might be "Could you add me as a Snapchat friend?". "Could you" is maybe a little more formal which is a tiny bit odd in this context. "Add me up" would be used more like a situation where you are closing out a bar tab at a bar and you ask the bartender to "Add me up" meaning "add up my bill so I can pay."