You can access other settings of the Deeper app by clicking on the menu icon on the top left corner:
History - History stores all your recorded scans. It can store an unlimited amount of data. Every recording can be scrolled through from beginning to end. You can also see the exact date and time when the scan was made, as well as its duration and sonar mode that was used.
Offline maps – an option to download maps for offline use. Maps are sorted by region and country. Once you have download map from the list, you will be able to access it anytime you use Boat or On-shore GPS mode, even if you do not have an internet connection.
Preferences – allows you to choose the time format (24/12 hour), as well as measurement units: Metric (m, °C), Imperial (ft, °F), Fathoms (ftm, °F), Mixed (fr, °C)