The self study application targeting the common JLPT (Japanese Language Proficiency Test) or (the Japanese Aptitude test) has now been released.
Containing roughly 2000 kanji and 8000 words, including thousands of kanji compounds, divided into the N5 to N1 levels the tests are made up of. N5 being the easiest and N1 the hardest.
Have a look at the application page for more information.
FREE limited version is available here (JLPT Self Study FREE link) for you to try out.