The bundled apps version is:

$ /Applications/MythTV\ bundled\ app/MythFrontend.app/Contents/MacOS/MythFrontend --version
Please attach all output as a file in bug reports.
MythTV Version : v0.28-39-g35dce94
MythTV Branch : fixes/0.28
Network Protocol : 88
Library API : 0.28.20160309-1
QT Version : 5.5.1
Options compiled in:
 profile using_corevideo using_backend using_bindings_php using_darwin using_firewire using_frontend using_hdhomerun using_vbox using_ceton using_libdns_sd using_mheg using_opengl using_opengl_video using_qtwebkit using_qtscript using_qtdbus using_taglib using_profiletype using_appleremote using_bindings_php using_freetype2 using_mythtranscode using_opengl using_ffmpeg_threads using_mheg
}}}

The MacPorts version is:

$ mythfrontend --version
Please attach all output as a file in bug reports.
MythTV Version : v0.28-6cda2125-MacPorts
MythTV Branch : fixes/0.28
Network Protocol : 88
Library API : 0.28.20160309-1
QT Version : 5.6.1
Options compiled in:
 release darwin_da using_corevideo using_backend using_bindings_perl using_bindings_python using_bindings_php using_darwin using_frontend using_hdhomerun using_vbox using_libcrypto using_libdns_sd using_libfftw3 using_libxml2 using_lirc using_mheg using_opengl using_opengl_video using_opengl_themepainter using_qtwebkit using_qtscript using_taglib using_appleremote using_bindings_perl using_bindings_python using_bindings_php using_darwin_da using_freetype2 using_mythtranscode using_opengl using_ffmpeg_threads using_mheg using_libass using_libxml2