Both Android/iOS, and these could include communication (e.g. phrasebooks/translation), mapping and routing etc. Thanks!

I'm sure everyone will think of Osaka's USJ or Disneyland/Sea just outside Tokyo, but I was wondering what else the country has to offer.

What are the best English resources for researching Japan's numerous mountains/trails and planning your hike?

This could be anything from third-wave coffee shops to traditional kissaten-style places, or the latest Starbucks location!