Welcome's a travel app (iOS currently) which helps navigate new destinations on the fly. You can leave tips, ask your friends for tips, skip boring stuff, or lock in your favorites to have Welcome sweat the planning while you wander and enjoy. If you go off plan, no biggie. The app adjusts to wherever you are and picks out the best venues.
Here's a writeup on Techcrunch with more details https://techcrunch.com/2019/06/11/welcome-launch/