The app does not provide in-app navigation, but will show you your live location and will beep when you are close to the point (you can turn off the beep by pulling up the "tool drawer" - press the "GO" button, then swipe up on the horizontal line above it to find the setting).
For detailed navigation, the app will launch the coordinate in your phone's default Maps app. Press the "GO" button after generating a location. Then swipe up on the horizontal line above the button in order to open the tool drawer. Select "Open Map" to open the coordinate in your default Maps app. Select "Navigate" to start navigation in your phone's default Maps app.
Please note that anomaly type locations {Attractors, Voids, Power) are not composed of a single coordinate, but a radius. The entire radius will not be displayed on your external Maps app - you will have to look back at the Randonautica app to explore the entire radius once you get to the location).