If you study Japanese and have an iOS device, you need this app – Midori (Japanese Dictionary) Review

Midori is essential for Japanese language students. If you're wondering whether or not you need this app, the answer is "yes". Its value far exceeds its modest price. Finally, the developer is the most responsive I've ever had the pleasure of interacting with; he takes great pains to make Midori as comprehensive and polished as possible.
Review by tinyapps on Midori (Japanese Dictionary).