☞ https://www.openstreetmap.org/

https://f-droid.org/packages/app.organicmaps/ or https://github.com/organicmaps/organicmaps

Organic Maps is a free Android & iOS offline maps app for travelers, tourists, hikers, and cyclists. It uses crowd-sourced OpenStreetMap data and is developed with love by the community. No ads, no tracking, no data collection, no crapware. 

https://f-droid.org/packages/net.osmand.plus/ or https://github.com/osmandapp/Osmand

This project aims at providing comfortable map viewing and navigation (routing) application for mobile devices. Particular stress lies with complete offline features (via pre-loaded offline map data) or economic internet usage.

https://apt.izzysoft.de/fdroid/index/apk/akylas.alpi.maps or https://github.com/Akylas/alpimaps

Alpi Maps is a map application to help you prepare and enjoy your hike! Get all the info you need before you go, then enjoy all the data offline during your hike.

“Gulf of Trump” just go for the gusto you fucking spinless pussies.