How can iBeacons/Eddystone beacons incorporate into a mobile application?

Assuming that, I am creating a mobile application for my event and what type of Eddystone should I be using? If I am reading it correctly Eddystone are compatible with iOS and Android right? How can beacons incorporate into the mobile application if I am using Wordpress to create the event app? Are there any additional plugins or APIs or SDKs that I need to use?