The basic functions can be used as expected, here the app is well structured and quite mature, I would forgive 4 stars. A significant depreciation arises for me from the fact that the Amazon Kindle Fire Devices to use "my Hue", ie the control of the lighting from a distance, is not possible. When setting this function to hang in an endless loop, log in to "My Hue" is not possible. Thus, advertised by the manufacturer of the core functionality Hue system does not exist. In an app offered by Philips even that is unacceptable to me and should be urgently improved.