Q: From what I can see the wifi gateway only turns the the power to the LED strip on or off. It does not appear to have an app to change colours as is done by the remote control. Can you confirm what functions the wifi gateway gives?
A: Wi-Fi gateway controller is capable to control up to 8 zones/areas (every zone requires a separate wireless RGBW LED controller) and is not just for on/off has an App that you can download either for Android or Apple devices
App can be downloaded for free from "Apple store" or "google play", the name of the application is "easylighting easylife"
Using the App you can do everything that can be done with the remote.
The Following Link is a Simple installation tutorial about The Wifi Controller