Navigation applications will definitely be useful in Tokyo and other cities. Apart from well-known Google Maps, check out Japan Travel Application: JAPAN TRAVEL APPLICATION
In case you do not have a local sim-card, searching for a free Wi-Fi can be a challenge. Check out this Japan connected Free Wi-Fi application to make it easier to find a spot: JAPAN CONNECTED FREE WIFI
How to find a place to eat? There are plenty of restaurants, and sometimes it is hard to decide where to go, especially if you do not speak fluent Japanese. Gurunavi application can help with it: GURUNAVI
Learning Japanese can be a challenge as well! If you are a beginner – just learning word by word, phrase by phrase is a good option. Try Learn Japanese – Free WordPower application to learn new words everyday: LEAN JAPANESE – FREE WORDPOWER
To check out calendar, Japanese public holidays, postal charges, convert dates etc. Pocket book Appendix application is very convenient:
We hope that you enjoy your internship in Japan!