Slow, unreliable & gets worse by the day. Unintuitive design in terms of changing settings. The routines are very limited. Nest Protects are still not available in it. Plus the works with Nest integrations are still not available. I really hoped this app would get better over time but the opposite is true. Due to things not working that used to and Google's lack of new products over the last few years I am starting to get rid of Nest/ Google devices and move to locally controlled devices.