tl;dr: Organic Maps is a free, open-source, privacy-focused offline maps and navigation app built on OpenStreetMap data, forked by the original creators of Maps.Me. It offers turn-by-turn navigation, hiking/cycling trails, contour lines, and offline search with no ads, tracking, or data collection, and recently hit 6M installs as of December 2025. Licensed under Apache 2.0, it's funded by donations and institutional grants.