Here is another app connected robot that cleans your windows without you having to break a sweat. The ECOVACS Winbot W1 Pro uses a forward-reverse motion in 3 modes to get the job done efficiently (deep cleaning, quick cleaning, and stain removal).
This robot a smart sensor to detect edges. It comes with 2800Pa suction to stay put. It uses a large microfiber cleaning cloth to absorb more water and a 60ml water tank.