BitBox is a native app for Bitbucket. At the moment the feature set is very limited but given enough interest I'm hoping to expand the app to cover most if not all possible bitbucket actions.

A list of features/limitations/how-tos can be found here: https://bitbucket.org/leighton_lilford/bitbox/wiki/Home

To report/vote on any bugs/features go here:
https://bitbucket.org/leighton_lilford/bitbox/issues