Is this the best app of its kind? It might be. I used it years ago while Studying Japanese and now I came back to it. I have yet to find a Japanese learning app that is so complete (that includes both Kanji and vocab), with such a simple straight-to-the-point design and easy/fast learning drilling method. Amazing app, thank you.
MM5342 about JLPT Study, 1-5 Level Kanji and Vocabulary Japanese Language Proficiency, v2.6.0