Who said you need to study Japanese to be able to communicate in Japan?
Imiwa is a very handy multilingual iPhone app translating Japanese from and to English, Spanish, Italian, French, Portuguese, German, Korean and Russian.
It is very easy to use, works offline and best of all: it’s totally free!
Requires: iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
Price: 0$
Download!