You can follow a track providing by gpx file and record your track by Green Tracks. You can understand your current position with the GPS automatic positioning and reduce the risk of lost.

Green Tracks support Mapsforge and MBtiles offline map. It's helpful in climbing and hiking.

Green Tracks support HGT file to improve elevation accuracy. You can extract hgt files to the specified path by Global Settings.

You can download offline map (.map format) from OpenAndroMaps or Mapsforge website.

http://www.openandromaps.org/en/downloads
http://download.mapsforge.org/maps/

How to download OpenAndroMaps? Please watch the video below.
https://youtu.be/EAN0Ct7hUFI

If you like this app help me to translate into your language please. you can contact me by email. Thank you.