By the way, the app is out now.
It is mostly decent, least it is more stabile than the mobile site.
But if you like to read by your circles (like I have a circle of people I am following and want to read), you will be very annoyed but it as it is a very clunky interface. They didn't even take the most obvious interface for circles.
So, you have to hit circles on the main screen. Which gets you to a list of people on your circles. So you have to tell it, no I want to view my circles. Which finally gets you a list of your circles. Then when you hit the one you want to read, you have to then tell it, no, I want to read the posts, not see the people in it. And if you want to change circles you go back to the list of circles (least it doesn't put you back on the list of people) and start all over again.
I think a more obvious solution they could have done was when you hit circles on the main screen it gets you a list of your circles (I would think that was the, "Duh, that's what you'd expect if you hit the circles button"). Then at the bottom it could have a all your circles as one of your options (if you want to view all your circles). Then if you hit a circle it gets you the posts of that circle with a button on top to edit that will put you into a screen of list of people in the circle with options to add people on top, swipe to delete some one, and on the bottom a button to delete the entire circle (and maybe rename it).
To me how they did it is very counterintuitive and also very clunky if you want to read by circles.
Honestly, if this is the way they treat their interface for Android... yeah, I don't think I'd want Android if that is how they do their interfaces. They went about it in a very clunky way that isn't that intuitive and it doesn't even really offer any better customization.