I got this AC about a month ago & it has performed well. With a couple fans it cools my whole house. Aprox 1200sqft. Rooms at far end are warmer than others but still cool, and keeps humidity down. I have not used app much yet but seems to connect after a full minute or two. Installation was fairly easy with everything I needed included in the box. My window is 46" wide which is a bit wider than the max stated on box & manual but still worked good, just needed to cut a board to fit in the gap.