LG Watch R / iPhone third party apps

I just got my new LG Watch R. Works fine with my iPhone 6. I can read messages and swipe them away, no promblems there.

Now i would like to use my new watch with sports. Is there any way to install endomundo or something on the watch? Its not neccesary at all to connect endomondo with the iPhone, but i just want to see my speed etc on the watch.

Besides this i have a problem installing watch faces. If i want to install a watchface from the Android wear app it doesn't install anything.

Thanks for the help.