Hybrid app uses web api?

Do hybrid apps have to use web versions of an API?

in this case its the google map, my app takes the position (lat/long) from the client/user (only once, fixed non-changeable position) and stores it in a DB with its profile, and show his position to everybody else on the map (and he sees everybody else also along with their contact info).

google maps/earth got so many APIs im lost on wich one is best to do this!