Sondre Guttormsen

Hey. I’m Sondre — an Olympic pole vaulter who had zero experience in app development, but I taught myself how to build an app because I was struggling to follow my friends' dating lives after graduating college. The group chat was chaos — screenshots, nicknames, mixed signals, and constant “wait, who’s that again?” So I built ROSTR — a Strava + Group Chat style app for dating: ✅ Track your...