It is an online and offline map viewer. With this app you can use different map formats, such as GeoPDF from USGS store, GeoTIFF maps, .ozf2, .img garmin (vector, no full support is provided), .mbtiles and others. You can register in the OruxMaps servers, but it is not mandatory, the app will work without this step. If you sign up for an account, the app will ask for various personal information, including an email account, date of birth, gender, weight and height. These data will be stored on an OruxMaps server and will not be shared with any other user, person or company; I'm just at your disposal. If you delete your account, that data is deleted from the server.
If you want to use the 'multitrack' option, the app will ask you to choose from your contacts the emails of the users with whom you want to share your location. These people's emails will be stored on the server, so you can share your location with them. These emails will only be used for this purpose. If you delete your account, this information will also be removed from the server.
Supported Android Devices : [4.1–4.3.1] Jelly Bean - [4.4–4.4.4] KitKat - [5.0–5.0.2] Lollipop - [6.0 - 6.0.1] Marshmallow - [7.0 – 7.1.1] Nougat - [8.0-8.1] Oreo -  Pie