Since I got a very stupid response "from the developer" -- I'm adding more info to my review. Btw, I'm a programmer myself, as well as own an IT consulting business. The issues I'm reporting below are my own, as well as shared feedback from my clients. Original post: Slow and full of bugs. UI is poor. Frustrated every time I open this app Updated post: First off, I have the nest app on 5 devices. 3 Android devices, and 2 Apple devices. So I don't need "reinstallation instructions" from the developer, but thanks for your generic and unthoughtful response. If you really want to solve problems, ask questions and hire better developers. Here's my list of complaints for this app: -On Apple, you get ALL your notifications that you can review without opening the app. On Android, you only get the most recent. You have to open the app and view every clip to see what's happened since you last checked. HORRIBLE design. Keeps me using my iPhone. -Even when I'm home and on the SAME WiFi as the cameras, it can take anywhere between 30-120 seconds to view the live stream of the camera. Rarely will it load faster than 30 seconds. ON ALL VERSIONS OF THE APP. -The UI for replay is horrible. Oftentimes my thumb will slightly touch the edge of the screen while trying to hold my phone and the video jumps to some other spot. Also, I'll try to zoom in (especially on the right side of the screen) and it will think I'm wanting to skip to another part of the stream. BAD UI. -Saving a clip often doesn't save everything I want, so I have to do it multiple times. -Saving a clip feature only available in portrait mode. Which is really dumb on a phone when you need to watch in landscape to really see anything. Plus when you rotate the video will often jump to another time of replay. Now, camera specific issues: -I'm paying for the extra AI to detect faces, but I've had MANY times where someone pulled up and walked RIGHT UNDER the camera and there was NO notification of motion, or face. HORRIBLE. App issue for the thermostat: -Oftentimes you'll set a new temp, then the app refreshes the screen with NO CHANGE saved. So then you have to do it again. Oftentimes I'll have to update the temp 2-3 times. This happens on BOTH Android devices, and less often on IOS. I'm tired of typing, ready to hit the gym now. Thanks for coming to my Ted Talk.