The inbuilt Map app requires I enter the Japanese address via kanji. Well thats a lot of extra work. This app has a drill down menu for all addresses in romaji. No keyboard required. Just select prefecture, then city, then town name, then block number, and lastly the building number. Fast and easy.
This so far in testing has accurately shown the locations of places, whereas the inbuilt Map app sent me to the wrong area twice.
Four stars for making all that easier and more accurate for me.
It is as stated before not a true navigation app. You wont get turn by turn directions here.
Gokunama about JAPAN MAP by itsumo NAVI