En réponse à MaM.

Thank you for your comment, it made us realize that:

We wrote "© OpenStreetMap" instead of "© OpenStreetMap contributors"

The attribution couldn't be seen on mobile

The adresss/direction autocomplete should also mention the OSM attribution

All of those mistakes are being fixed as we speak (and will be deployed on the next update).

As for using alternate services, we are thinking about hosting our own, to lessen the load on OSM servers. Right now, it's only a demo site on an early beta, so we don't think it represent too much of a load, but please tell us if we are mistaken or misinformed.