Somehow stumbled on #OsmApp , calling itself a "universal OpenStreetMap app" that looks very good for casual , everyday use of OSM on mobiles.
Pros - clean UI, vector tiles from #maptiler, search-as-you-type queries, PWA/multi-platform, custom layers
Cons - no routing, #idEditor
Users can leave OSM notes for issues or feedback, without a user account.
It uses #idEditor for editing but definitely isn't ideal on small screens, but usable in a pinch.
For some unknown reason, this app shows #mapillary links but don't show images themselves. That could've been a huge plus.