Definitely similar problems, but in a somewhat different way. This library looks more featured than Angular UI Bootstrap, though in mostly small ways.

The popovers allowing external templates and custom scopes is one example, and the inclusion of navbars, date and time pickers instead of pagination, accordions and carousels is another.

If it works, I'd say I like it more than Angular UI's version, which is probably simpler to get up and running but something that you'd run into the limits of more quickly.