Our team has spent since July 2013 trying to find the best maps for you. It's not been easy but we think we found the best solution available. Our maps are a combination of open source data from OpenStreetMap and OpenPisteMap. This means that everything is curated by a community of passionate cartographers.
However, while this provides the best global coverage it isn't always as up to date as we'd like. If you spot any problems please contact us and we'll put it right as quickly as possible.