Please never say the words "what looks better on college applications" ever again.
Don't participate in clubs or sports solely because you think it looks good on an application. Do whichever you think you'll enjoy more. You're a freshman in high school: you're supposed to be finding your identity and exploring the world around you.
If you think you'll have more fun with fencing, go with that. If you think you'll have more fun with the clubs, go with them. Personally, I would never cut out something fun like a sport for a boring old club or two, but that's just me. But hey, if you're not terribly sporty like I am, you might enjoy doing the clubs more.
No matter what you choose, just find something you're interested in and stick with it.