When editing #OpenStreetMap on the go, @everydoor is my hands-down favorite, but I'd hesitate recommending it for more new mappers.
I've been playing with #OsmGo just now, and really like how easy it is, maybe even for new contributors.
Plus, it's a progressive web app that runs in a browser, or installable in your device: https://osmgo.com , so this also seems to be a great candidate tool to introduce as a friendly editor for @openstreetmap mapping parties for new users.
