OsmAnd Ski Maps is a nice addition for OsmAnd Maps & Navigation app, that allows to see all the ski pistes and all available additional information related to ski maps.
Usage Instructions: all pistes and ski map information is already available in the maps. Once you enable the plugin in OsmAnd application the ski maps will be enabled automatically. Ski maps are provided as a special map style and to switch style in OsmAnd please use the menu item 'Configure Map' on the map screen.
In case you would like to get to the default map style please disable the plugin or change the map style