2 star for Android things I just started also to learn 1 star for having on Android and things tab but 2star deduct as your app is hang while couple of navigation it's horrible experience as being developer. Location for weather statistic and backward nav hang on some point. Moreover, I have experienced your app is just for landscape as an experience I notice while nav in menus I missed few scrolling list view I didn't notice does they exist. But at the last nav I notice you have scrolling list view that was easily experience if it will be in portrait mode you should not fix it for Android app but for tablet definitely it's awesome. I hope you take this view as a testing design and improve your app. Don't waste my critical feedback as I spend my 1 hour for whole these things.
It is great as it is and does what it is supposed to do but I think it could be improved. One thing I noticed is that the password for homeassistant is not saved and has to be retyped every time. It also would be amazing if you could make it possible to show a couple of mqtt sensor states on the screen saver together with the clock. I would use that to show the state of one of my mqtt temperature sensors and maybe the outside temperature. However, it already is great and works very well! Good job!
Love that it is not tied to homeassistant but can be used with any mqtt setup!
Looks and works great, you should add a mode to make it work in portrait mode and use it as a handheld remote.