There are many resources available online for helping those interested in learning and practicing Japanese. Obenkyo for Android is one of those apps that does a good job providing a lot of options for students of Japanese who are learning formally through classes or are looking to understand some of the basics of Japanese on their own.
I have been using Obenkyo on and off for a few months now and it is one of my favourite Android apps to pull out to do a quick quiz. Be in Katakana, Hiragana, Kanji, particles, grammar, numbers or vocabulary the app provides a well rounded platform for disciplined practice. LVIVESCORT.COM
It covers all five levels of the JLPT and although it is a free app allows users to turn off advertisements for a distraction free experience. Obenkyo is a capable flashcard app and Japanese languge resource that I would recommend. Find it at the Google Play store, download it and give it a try and let me know what you think in a comment below or via Twitter @Jamaipanese.