I hope they'll make a desktop web version of this app, because planning everything (what you want to see, where you want to eat, etc.) on a small screen is tedious.
For all my previous trips I have used Google My Maps [0], which is good but not great: on mobile, the places you added to your layers don't contain any Google Maps information, such as opening hours, and you even need to have data to get the name of a place you saved.
However, what's great with My Maps compared to Trips, in addition to the fact that there is a desktop web app, is that thanks to layers you can color-code the places you add to your map, so for example make all the museums pins purple, the restaurants pins blue, etc.