https://play.google.com/store/apps/details?id=com.ollix.fogofworld
ref - https://www.reddit.com/r/dataisbeautiful/comments/csl706/i_recorded_my_travels_as_a_professional_truck/
origin - https://www.pipiscrew.com/2019/08/fog-of-world-explore-memorize-map-travel/ fog-of-world-explore-memorize-map-travel