For serious hikers, mountain bikers, and search-and-rescue professionals, OruxMaps has long been the gold standard for Android GPS navigation. While newer versions exist (now rebranded as OruxMaps GP ), version 8.5.5 holds a special place in the community.
Disclaimer: OruxMaps is the intellectual property of jose vazquez. This article is for informational purposes regarding legacy software. Always support developers by purchasing the official version if you use it professionally.