Much better than expected, the phone app is very easy to use.
High quality feel to the product and they are very easy to add to a home network. At night I turn the switches off and the next day when I turn the switch on the leds are still connected to my Wi-Fi. After a few days I noticed that one had droped off the Wi-Fi and all I had to do was press the "Add" button on the phone app and the network found the "missing" led in a few seconds. The intensity of the light can be changed (1% - 100% brightness) and the colour changed from 3 shades of white (warm, natural and cool) through the 7 colours of the spectrum. If you move the colour wheel slowly enough you can blend colours as well and there's also the ability to have the colours change on a cycle, kind of like disco lights but slower (I'm not sure if they can strobe to music or not - haven't tried yet). The phone app has a timer as well and also connects to smart hubs for voice controls. I was a bit worried that they would be very basic but am very surprised how good they are. I was also able to rename each led (art room, hall, bedroom, etc) in the app and rearrange their icons within the app to suit my house layout.