@MapAmore #StreetComplete is very convenient for mobile editing, but not suitable for adding new elements like roads or buildings.

#Vespucci allows for adding elements, but feels a bit clunky. Working on a small screen isn't advisable anyways for complex edit operations. Therefore, I usually make notes and edit on desktop for anything that is more complex than a simple POI. Never used the #iD editor on mobile.

I also use #OsmAnd for recording GPX tracks and creating OSM notes.