No ads. All features fully functional, you do not need to buy add-ons.
The map includes West Palm Beach, the main international airport, Royal Palm Beach, goes north to Juno Beach and south to Boynton Beach and Delray Beach. Places also included: Royal Palm Beach, Palm Beach, Hypoluxo, Juipter, Palm Beach International Airport, North Palm Beach, Loxahatchee River, Palm Beach Gardens, Wellington, Lake Worth, Mangonia Park
The map is based on OpenStreetMap data, http://www.openstreetmap.org. How good is it? In summary, good, probably complete coverage of roads and road names but still in the early days of mapping amenities like hotels, places to eat, things to do and see, shops, banks ... there is only 1 bank for example. You can help improve it by becoming an OpenStreetMap contributor.
The app includes a search function and a gazetteer of commonly needed items like hotels, eating places and pharmacies as well as museums and other things to see and do.
You can bookmark places like your hotel for easy return navigation using "My Places".
You can show a route to any place for motor vehicle, foot or bicycle; even without a GPS device. With a GPS device, turn by turn navigation is available.
Navigation will show you an indicative route. The developers provide it without any guarantee that it is always correct. For example, it does not show turn restrictions - places where it is illegal to turn. OpenStreetMap data in the USA is based on US government data which sometimes shows private driveways as roads and wrongly connects roads. OpenStreetMap massively edits these, but beware. Use with care and above all look out for and obey road signs.
System requirements: A device with a memory card with at least 30 MB of free space. GPS optional.