Arctic mapper is a client for Polaric Server which is a free/open source client/server software project. It targets radio amateurs (HAM radio operators), actors in voluntary search and rescue services and others interested in such technology. It uses selected map-sources like OSM and Norwegian mapping authority. For dynamic data like APRS you can choose what server (Polaric Server) to be used by the app, including your own instance if you wish to. It is by default connected to aprs.no, the map/tracking service of the Norwegian Radio Relay League. Login is also possible if you have a user account and this can give extended acess to information and functions.

Privacy notice: http://sarhack.no/AM.privacy.html
Full service: https://aprs.no