I use this app for the smart bulbs. I bought two years ago, and they work just fine. I bought a pack of two recently, and they're always offline. What's the point of having smart bulbs if they're constantly disconnecting from the app or the internet? When it works, it works fine. I like being able to create tasks for my bulbs. What I don't like is constantly having to force stop the app and clear the cache for it to connect to the two newer bulbs again or constantly resetting bulbs.