OpenStreetMap is a great ecosystem - I'm a long term contributor.
Some pointers:
- CoMaps is a fork of Organic Maps, which forked long time ago from Maps.me
- OsmAnd is similar. It has more features but is slower and clunkier
- If you see errors/missing stuff on OpenStreetMap, fix them. You need a free account for this. There are various tools to help out, such as the editor on Osm.org. Beginner-friendly editors are https://MapComplete.org (which has thematic maps; disclaimer: I'm the main dev) and https://streetcomplete.app
Some pointers:
- CoMaps is a fork of Organic Maps, which forked long time ago from Maps.me - OsmAnd is similar. It has more features but is slower and clunkier - If you see errors/missing stuff on OpenStreetMap, fix them. You need a free account for this. There are various tools to help out, such as the editor on Osm.org. Beginner-friendly editors are https://MapComplete.org (which has thematic maps; disclaimer: I'm the main dev) and https://streetcomplete.app