All info regarding adding the UbuduSDK to a host application along with necessary project configuration can be found in the Wiki.
For information on pricing, features, examples and our fantastic iBeacon compatible beacons please check our web-site http://www.ubudu.com. It is totally free to develop with Ubudu SDKs and we only charge usage... above a certain threshold.
Ubudu SDK is a contextual interaction platform designed to help you to develop and deploy new user experiences bridging the physical and digital worlds, by the power of micro-location technology. You can find the java docs of the API here : http://www.ubudu.com/docs/android/contextual_interactions_sdk/index.html