PinPoi

PinPoi imports thousands of POIs into your Android GPS navigator, letting you browse collections, view POI details, and share them through any app. It supports importing POIs from Google KML/KMZ, TomTom OV2, GeoRSS, Garmin GPX, GeoJSON, CSV, and zipped collections directly to your device, with local files or HTTPS URLs due to Android restrictions.

You can search using your current GPS position or a custom location (address or Open Location Code), pick destinations on a map, and open them in your preferred navigation app. The app can be used offline for data, but maps require an online connection, and the app does not ship with POI data itself.