This is a very simple Android app with Google Fusion Tables and Map, in which user can submit location coordinates based on GPS/other location. Location(s) is saved in Fusion Tables, it can then be displayed in map.
Fusion Tables serves cloud-based table as data persistence, in this example data is collected from Android device.
I shall create a basic Android app in MIT App Inventor 2 for learning purpose. This basic app can then be used as part of a more complex Android app. 😇