I downloaded snapchat a few years ago. Didn't know enough people on it and uninstalled after a month or two.
About a year ago I reinstalled as a way to share a trip I was on. It was perfect for that.
You'll post one perfect, curated photo to insta of your day, but you'll snap the random guy in the street, a funny sign in another language or just some bullshit you're up to.
Instagram feels a bit past its prime these days. I follow more commercial accounts on insta than I do on snapchat.
Snapchat it's like 40 close friends and fam. People who have my phone number.
Plus if you want to meet girls (sub 30 I should add) snap is the easiest way to connect lately.