EBPocket Lite app for iPhone and iPad
EBPocket is dictionary viewer for EPWING standard.
It is also possible to search for StarDict,MDict,dsl dictionary.
EPWING is one of the most common dictionary standard in Japan.
EBPocket Free can perform a variety of search methods,
for example, incremental search, prefix search and suffix search.
And, also supported on the images and sound.
You can transfer the dictionary vie itunes file sharing or FTP.