Unfortunately, didn't work properly at all on my HP Slate 21 Pro
Great for uber.
Does what the dev claims, but didn't sync with the OS. Ie the OS says it's portrait while this app forces landscape. Also, per app settings are very clunky and hard to get to. Can't adjust the *current* app. Try Ultimate Rotation Pro. I think that's what it's called. Same features, just done better.
It's one of those apps that tries to do so much it becomes an ornament. All the auto settings are a bit pointless because, taking say, Youtube or Chrome its pointless trying to settle on a fixed orientation. All I really need is to be able to toggle between orientations at will with a single or double tap. That's it. Simple!